She's a grown up woman and of course she has a past. You say maybe "she has fallen prey to a man who took advantage of her vulnerability", but even if it wasn't like that, maybe if she was just feeling very lonely and confused, still trying to come to terms with the death of her husband or maybe she just fancied a good Shg or whatever, it doesn't matter, it's something that happened years ago. I think the only reason she told you is that she seems to feel some personal shame about that period of her life. Don't you give her a hard time about it as well. Get over it.
Iain.
