Our expert says:
I"m not sure that it's really up to you. It sounds as though she is being realy foolish, not only in picking a man who is married and committed to someone else as the target for her over-blown affections, but in directly challenging the wife. Just tell her this is a very foolish way to behave and sure to end in tears all round. She should see a counsellor if she really feels she cannot manage to achieve sensible behaviour. You don't mention his attitude towards this. If he doesn't welcome it, he can get a court order forbidding her from contacting him or his wife.
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