Her affair is (MIGHT BE--she could be lying) over. But that doesn't mean she gets to come home. Look into what sandi has posted about WWs. There needs to be remorse. There needs to be a desire to WORK for a restored M. There needs to be something more than "poor me, my OM left me, LBH, please make it all better."
I agree with joejoe. Grab a beer and some wings. Keep GALing. Do NOT let her right back in without working for it, or you WILL be here again.