I actually broke this off. Took time to bottom line her actions and decide that I'd not feel comfortable pursuing it.
She did take it well, and has been in touch trying to clarify the situation, (she met up twice not 3-4) as well as share other details. She's open to questioning which is good. And then followed up with, wants to prove she's trustworthy, give us time etc. I've a gut feeling nothing really went on, as that previous thing ended abruptly.
Anyway, going to take time to think it over, as I've left the door slightly open. Thank you all for discussing!