The Wodonga Magistrates Court heard the girl reported being bailed up in a room by Marcia Leeanne Davidson last April, after moving into the home around Anzac Day.

The girl told a friend Davidson had pressed against her, exposed her chest and tried to kiss her.

The court heard the girl, who had been living at the home for a few days, had been hit by the older woman.

She told the court she has been left suffering migraines and was unsure what to do after the incident.

The victim reported the matter to police on May 8 and Davidson was arrested the following day before being questioned by officers.

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She denied the allegations and claimed the girl hadn't even been living in her home.

Davidson said she had just been looking after her cat.

But multiple people gave evidence in court proving she had been residing there.

A friend said the girl was "upset, hesitant" before confiding in him.

"She didn't want to tell me about any of it at first," he said.

"She was reluctant to really talk about it at all."

The teenager also spoke to a female friend, who also gave evidence.

"She explained to me she'd been indecently assaulted," the woman said.

"She told me (it was) by Marcia."

The court heard the girl was agitated, worried and scared following the ordeal.

She repeatedly denied she had made up the allegations.

The court heard she had been left with ringing in her ears and later developed migraines.

She relayed details of the inner workings of the home despite Davidson saying she hadn't lived there.

The teenager made plans to move out of the home a short time after the incident.

Defence lawyer Anthony Grant said there were irregularities in her evidence.

But magistrate Peter Dunn found the counts of indecent assault and assault proven, causing Davidson to break down in tears.

She was placed on a community corrections order.