the wife loves her family and she is suffering lot on what to do next
He is my collegue, any suggestions guys ???
Although I think many have already answered your question. But I'll tell you what "I" think (IMHO):
1. The sacrifice on her part is huge and I hope for her sake she knew of this fact before accepting. Regardless, her acceptance from an Islamic point of view is incredible for her and the best decision of her life.
2. Yes she is not in a marriage contract with her old husband unless he also accepts islam.
3. No she is not required to give up her children. 14 and 16 are quite reasonable ages in todays western societies for children to understand if the mother explains the reasons for her decision to them. The impact of her decision will be based upon what sort of a mother she was prior to accepting islam. If she was not a (not suggesting this for this case) good mother, then the children might think of this as a selfish act on her part. And in the other case they might understand.
2. This is the husbands (your friends) view that the children are not interested. Maybe they are. Who knows.
3. The advice we give here would be best if given to the mother rather than a friend of her husbands to pass on. First hand is better than 3rd or 4th hand info. If you get what I mean.
if she really has accepted Islam from her heart, she shud be willing to sacrifice for the sake of Allah....
many muslim women, who had entered the fold of Islam, at the time of the Prophet (saw), did leave their husbands who did not accept Islam....
agreed right now i have examples here.There are ladies who left their home because of ISLAAM and MAY ALLAH bless them with hapinness ameen but they sacrificed their homes.