The sister told a Newcastle District Court jury on Thursday the woman contacted her on FaceTime and said something had happened but she wasn't sure if she should tell her.

The woman then told her sister Hayne had hurt her after telling him she didn't want to have sex with him in her bedroom in September 2018.

"She mentioned to me that she had gotten into the shower afterwards and watched the blood run out of her," the sister told the court.

"I asked if she had told him to stop and she said, 'Yes.'

"I told her that's basically rape."

The sister said the woman didn't think it was rape and didn't want to go to the police because her understanding was rape involved a man using his penis.

The woman's mother earlier told the jury how her daughter showed her mobile phone photographs of blood in her bedroom and injuries to her genitalia which looked like "three nasty puncture wounds".

"She said he (Hayne) had wanted sex. He was persistent and overbearing. She had said she didn't want to. She said 'no' a number of times," the mother said.

"She said she thought he'd bitten her."

The mother said her daughter told her the previous night - the night of the alleged rape - "I think he wants sex', but she said there's no way."

"I said, 'That's right, no" and I walked off."

The mother thought Hayne was intoxicated, loud and excitable.

Hayne, who had been celebrating rugby league player Wes Naiqama's bucks' weekend in Newcastle, had paid a taxi driver $550 to take him to Sydney before asking her to stop at the woman's house.

Crown prosecutor Brian Costello has told the jury Hayne attacked the woman in her bedroom after she invited him to her house on the outskirts of Newcastle on September 30, 2018 - the night of the NRL grand final.

Mr Costello said Hayne arrived about 9pm and stayed for about 45 minutes, committed two sex acts on her and caused two separate injuries to her genitalia before leaving. The woman's mother was in the house watching the grand final.

The woman, now aged 28, later sent text messages to a girlfriend saying she thought Hayne had bitten her vagina and she felt violated.

The woman didn't want to go to the police initially because she feared Hayne would have the money to ruin her.

She said she later went to see a doctor who examined the injury to her vagina and told her: "It looks like a bite."

Hayne, 32, has pleaded not guilty to two charges of aggravated sexual assault inflicting actual bodily harm.

The woman became angry and upset when they were in the bedroom after she realised Hayne had a taxi waiting outside.

The taxi driver soon came to the door asking for Hayne, saying it had been 20 minutes. Hayne went outside and spoke to the driver before returning to the house.

The woman said Hayne tried to kiss her and she said no before he pushed her head into the pillow, pulled her pants off and attacked her, ignoring her pleas to stop.

The woman said Hayne only stopped when there was blood everywhere, including on his hands and face.

He went to wash his hands in the bathroom before she had a shower when she was feeling a stinging sensation in her vagina.

When she walked back into the bedroom, Hayne told her he had to go.

Defence barrister Phillip Boulten SC said the sexual activity was consensual "but unfortunately it didn't go well" and Hayne thought he must have cut the woman with his fingernail.

The trial continues on Friday with the crown case expected to finish and Hayne to give evidence in his defence.

Australian Associated Press