Women are myopic to situations that shatter the reality they've created in their heads. That's why a woman that rejected a man's romantic proposal but remained friends acts surprised he's sexually interested in her.

I once told a babe the men around her weren't friends but hopefuls waiting for a slip up to fuck. She disagreed vehemently. I asked if she'd been propositioned by any of them before; she said yes but she refused so they agreed to settle for friendship.
I laughed.

Told her to text them saying she was horny and wanted to fuck and she'd have her answer. She still argued but finally did it.
I could tell the answers she got from her demeanour. It was a mix of absolute befuddlement and disappointment.

Every single one of them either asked for her address or said they were coming over, including the married ones. She had to tell them it was a prank.
So if your babe has a male bestie you can ask her to do this. Your arguments about cutting him off will end (if she has sense).