[IntinyBut]

asalam alaikum

i post this question before but it not appear so im posting again. my sister get married 2 years back and 6 month ago she discover her husband have secret second wife. he keep denying this so my family not sure about this and we not take very seriously. but my sister doubt very strongly so she start work as teacher at junior college to support herself and son. now some days back her husband caught redhand because we find birth certificate of new baby with second wife on govt website. he now accept he have second wife and my family in shocked. he say second wife from powerful family so he cannot leave and he hav to give more better support to her and give better house etc. he also against my sister working saying it not islamic to teach boys but what he do is islamic!!!! my sister still work as nobody to support her. she asking for divorce because she feel cheated by husband. my father and brother saying no divorce but she is in shock. also husband refusing talaq and saying he will not lie anymore and ask forgiveness from my father. husband was best friend of my brother but still he did this act. we approach alim for guide us and he say also that dont go divorce. what my sister should do? any help is appreciate. thank you jazakalah.

farah