
Quoting
Foster_Foster
You would discuss the finer details of your situation with a local tax professional. I wouldn't seem best to act on suggestion from strangers based on next to no info. From a layman, it would seem smarter for her to file separately if she doesn't want to get caught up in the rigamarole involved with having to worry about filing "injured spouse" (innocent spouse) paperwork with regard to however much of a refund is hers and shouldn't be subject to your child support obligation.