My tuppenceworth - the woman has a personality disorder: stay away from her.
Just quietly stay well back, fob her off politely, and don't be drawn into explanations or discussions of ANY of it Anything else that you do or say will be used on you in psychological ju-jitsu.
If you let her bring up the subject of the come-on, then soon (if not already!) she will have you apologising for being callous, for hurting her feelings and for offending her - or even for
you inappropriately "coming on" to
her. (Be as neutral and non-committal as possible, or she may line up someone else to "confide" in - about you.)
Beware her offering to apologise profusely for her inappropriateness...then wanting to be forgiven...and cuddle and make up.
Do I sound like I speak from experience? I once had two such people in my workplace at the same time. No alleged sexual offences (though one of the targets got sacked for blurting "But you're old enough to be my mum!") - but all sorts of shenanigans, with a different gobsmacking story, a new best-buddy and a different target practically every week.)
I also, briefly, lived with someone like this. (In his case, a compulsive liar and charming petty thief.) In thirty years of adult life, I ran into all three within a three year period - how's that for luck? But it WAS lucky; these people are all tediously alike, at bottom, and very easy to spot once you've had a brush with one.
The similarity is the charm, and the tendency to lie about astonishingly serious and astoundingly trivial things. They have a spooky ability to co-opt anything and everything into their stories (Often the brag or the sob-story is based on the real circumstance of someone else that they know).
What's hard for nice people to get to grips with is that people like this will tell the most outrageous lies - lies with big consequences if found out; and silly, childish lies; and really riskily slopp lies - and not necessarily for any gain that you or I could see.
Paradoxically, the sheer gratuitousness of the lie is often how they get believed. Normal people think that surely they wouldn't be mad/bad/dumb/brazen enough to make up something so drastic/silly/unlikely/vile.
People like this simply don't distinguish between fact & fiction, truth & lies - except strategically.
One day, someone else will perhaps confide to you a strangely familiar tale of assault...and this time you'll be struck by how different - and how solid - the emotion is (because it's the genuine case she based hers on). Or someone will innocently drop a mention of this woman's deathly illness or something equally dramatic. (Because that's the sob story she calculated to most affect them.)
You'll be struck by how amazingly resilient she is to drastic illness...just as amazingly resilient as she is to "sexual assault".
Observe quietly, and silently count the discrepancies. Don't waste your breath confronting her with them - or at least not one at a time; there'll be an "explanation" for every discrepancy. (Like why the police aren't involved.) She'll just get "upset" then if that doesn't work, "angry" and a whole stream of other try-ons that she'll discard the moment she sees they don't work. Then she'll either stalk off in the huff or shrug and tell you it was just a joke and you didn't really believe it anyway, so where's the harm?
If you ever meet her neighbour, be prepared to meet someone who has no idea he's been accused of such a thing. (The clue is the police involvement. Think about the details that she included - and think about what parts of her account are kinda vague or cursory.)
There's a plausible excuse for every slip-up in a lie, when you confront a person like this. You'll walk away having been reasured that your memory was wonky, or that you somehow got the wrong end of the stick. And you'll only be accused of not "trusting" her. Keep stum and watch.
One thing you can notice about people like this.
(a) They often gaze into your eyes/scrutinize your face. They're watching to see how the story's going down, moment by moment, and adjusting it.
(

They're often very charming; they're popular amongst nice people, because nice people simply can't imagine why people would make up pointless, potentially disastrous, easily discoverable lies. There's no point in you telling people, if you discover she was lying. YOU'LL be the one no-one believes, you can bet on it.
(c) They're so intent on how to manipulate your view of them that they sometimes
fake the wrong emotion.
In short - give her a wide berth.
OK, that was about a million tuppenceworths and a gigantic vent - but bloody hell, once you've seen the chameleon's underbelly, the next one that comes along may as well wear a red flashing light.