Serious Question Time!

She Said Pastor, i need your advice on this issue.

My friend's husband travelled to France in search of greener pastures seven months after marriage and then she wasn't pregnant yet.

To cut the long story short, one thing led to the other, the man got married to another Nigerian there.
They now have 3 kids and he has told her to move on as he has also moved on with his life.

Church is asking my friend never to remarry as its a sin and that her husband will come back begging someday . Its been 12 years now and he's yet to come.

She is so dejected now hoping and praying dat he will come back and she's not getting younger at all. She's already in her early 40s. Please should she continue to wait?

What's your take on this?