I can't stand all the pressure!
Basically what I told the girls is that the situation would probably cause some initial surprise and shock, but not anger. Most women's religious communities today are very supportive of their members' emotional and spiritual wellbeing. If it was just a one time thing for the nun "caught" in the act, and she'd been otherwise faithful to her vows, she wouldn't be asked to leave the community. Of course, if that's what she chose, her decision would be supported and accepted. The community would definitely want to work with her either way to identify any underlying issues or needs she might have. If it was mutually determined that her needs weren't being met in religious life, that she couldn't remain faithful to her vows and would be happier as a single woman free to pursue an intimate relationship, then
she would be encouraged to request a dispensation of her vows, again with the support of the community. Hopefully, she would have the maturity and common sense to realize this herself.
How's that? Any more questions? Believe me, I've heard 'em all from the girls!