Probably about the same as OP or a few more - but, tbh, random gropes and even assaults haven't really lodged in my memory unless they had some distinctive feature.
When it comes to abusive relationships, I agree that women who were habituated to abuse as children are more likely to pair up with an abuser. However, I think that molly may be missing a trick in that the "abusedness" she sees in her clients is an inevitable result of abuse. They may have been perfectly balanced, self-confident and so forth before being victimised.
That said, my suspicion that there is a "type" more vulnerable to abuse was confirmed by Derren Brown's gripping gaslighting experiment, The Guilt Trip. He chose his 'victim' because there was something innocent about him - Brown said "something of the blank slate". I would say that's been true of me through most of my life: whilst I did have an abused childhood, and was very cynical in some respects, I've always been very willing to take instruction.
If Derren Brown can spot it over two meetings, so can abusers.
WRT attacks by strangers: my father, who knew about such things professionally as well as personally, said the only common feature he could find among female victims was several wore their hair in a ponytail. Easier to pull. Apart from that, which is pretty random in itself, it's all down to whatever crap is in the attacker's head; you can't take precautions against that.