As the search for the quiet but happy six-year-old passed the crucial 48-hour mark today, Rebecca Smith hit out at reports the little girl had not been at school for at least a week before she was reported missing and may not have been seen by anyone outside her immediate family for up to three weeks.

"I think it's a load of rubbish. People have nothing better to do with their time and if they don't know the truth then they make up rubbish," said Mrs Smith, the mother of Kiesha's stepfather, Robert Smith.

"These people are suffering and in turmoil; they're not interested in all this other stupid rubbish.

"I try and protect them from all this other crap - I'm sorry but that's what it is."

Kiesha's mother, Kristi Abrahams, and stepfather as well as Kiesha's half-sister Brianna, 2, and half-brother Levi, 3½ weeks, are staying with Mrs Smith in her home in Bidwill.

Police are today finalising searches of Whalan Park and Ropes Creek, which are both near the flat in Woodstock Avenue, Mount Druitt, in which Kiesha lives with her family.

The commander of Mount Druitt police, Superintendent Wayne Cox, said the 35 police and 36 SES volunteers dedicated to finding Kiesha would then move north to search bushland near Bidwill and Shalvey.

"Then come darkness we'll be moving on to doorknocking and canvassing to extend our perimeter there," Superintendent Cox said.

In addition to the ground search, a forensics team combing the family's brick flat for clues will focus on the front door, which was found ajar on Sunday morning, when Ms Abrahams realised her daughter was missing.

"[Whether there was] forced entry is being looked at by [the] crime scene [team]; we're gaining as much physical evidence as we can from the scene," Superintendent Cox said.

He acknowledged time was against police, now that the search was entering its third day.

"It's obviously concerning to know that we have a six-year-old girl still missing and her welfare is still the most important thing on our minds," Superintendent Cox said.

"We still hold hope but as time marches on it does become more difficult and we continue to appeal for public assistance in relation to this matter."

He refused to answer questions about Kiesha's welfare in recent times or when she was last seen at school.

Superintendent Cox also would not say whether Ms Abrahams and Mr Smith were suspects in the police investigation.

"We're looking at a range of scenarios from a wandering child at large through to something more sinister, which may be an abduction," Superintendent Cox said.

Mrs Smith said Ms Abrahams was a good mother and Mr Smith was "the father Kiesha always wanted".

She said she was not aware of any welfare agencies or other authorities raising concerns about Kiesha's situation.

It was reported today that Kiesha had attended just five days of kindergarten at Mount Druitt Public School this year.

Police said yesterday the girl was not at school at all last week.

Mrs Smith said Ms Abrahams told her Kiesha went to school every day.

The last time she can remember seeing her granddaughter, who called her "Nanna", was at a family birthday party three weeks ago, the same party at which Kiesha's uncle, Jason Smith, remembers last seeing her.

"I can't remember if I saw her since but she had a great time, playing with farm animals and running around with all the other kids," Mrs Smith said.

Kiesha would often spend time at her grandmother's Bidwill home, Mrs Smith said.

"She used to come over to my house, she loved playing in the backyard, riding her bike, going to the park," she said.

"We just want the little girl found but we've just got to leave it in the hands of the police."

LAST week, Kirsty Abrahams took her newborn baby, Levi, upstairs to visit a neighbour in their Mount Druitt block of flats.

''I nursed it right here,'' the neighbour said yesterday as police dusted for fingerprints downstairs. ''But I haven't seen the little girl for a while,'' he said. ''Can't remember when … The mum seemed fine.''

Police have been searching for the little girl - Ms Abrahams's daughter, Kiesha - since Sunday morning. Ms Abrahams has told police she put Kiesha, 6, to bed on Saturday night but the girl was not there when the family woke the next morning.

Police are unsure whether she was abducted or wandered off.

Yesterday, 65 people searched bush and stormwater drains near the home. There was a brief sense of hope when a bag of children's clothes was found, but it was soon ruled out of the investigation.

''She has left a big hole in our heart,'' Kiesha's uncle, Jason Smith, said. ''We miss her dearly and we would just like her home … There's a place missing at the dinner table.''

The Mount Druitt police local area commander, Superintendent Wayne Cox, refused to say when someone other than Kiesha's mother last saw her.

Mr Smith had not seen her in three weeks. Kiesha had not been to school for at least a week because, Mr Smith said, her parents were busy with their new child. Neighbours told police yesterday that they had not seen the child since Mother's Day in May. Superintendent Cox said police had spoken to Kiesha's biological father, who lives nearby. ''At this point in time, we're keeping our minds open,'' Superintendent Cox said.

Ms Abrahams and her husband, Robert Smith, were also helping police with their inquiries, he said.

Kiesha had her own bedroom in the flat she lived in with her mother, stepfather, three-year-old half-sister, Brianna, and three-week-old half-brother, Levi.

The front door was found unlocked and slightly ajar after Kiesha disappeared, but there was no sign of forced entry.

''They're very distraught at the moment,'' Mr Smith said of Kiesha's parents. ''They would like to talk to you but at the moment they can't find the words, they're in too much grief.''

The Minister for Community Services, Linda Burney, would not say if the family was known to the department or when the girl was last at school.

''We are following the lead of police,'' a spokeswoman for Ms Burney said. ''And keeping quiet while they do their thing.''

The search is expected to restart this morning.

Anyone who has seen Kiesha, who is 140 centimetres tall, probably barefoot, and was last seen wearing pink pyjamas and a lilac jacket, should phone Mount Druitt police on 96750000 or Crime Stoppers on 1800333000.