my sincere advice, i donot want reply,u should do introspection
1. are u ready to lose ur husband to ur bhabhi(so that she get what she want0? (considering what u told is true)
2.will u be happy with the money? is money everything?
3. are u so week that u cannot take away ur husband from her bhabhi(only if what u said is right) using your charm?
4.what answers your child will ask u in future?
i will say u can still save ur marriage.i know u have the capability. for me try for atleast once. best of luck