No use taking your mom and dad to do panchayat.
Leave the kid with her, if she files for alimony etc dont pay, she only threw you out of house, you will not need to pay any allimony, and leave the kid with her only, she should be listening to you but she is listening to her father, let her stay there, dont bother yourself much, you find some one else and start live in relation. Dont even think of filing for divorce, file RCR and sit tight, years may pass, but dont file for divorce, dont pay her a single penny, RCR definitely you will win.
Women like these should be taught lesson like this only, 1 year down the line, there will come a point where she will be scared to face public, 3 years down the line her great father will commit suicide coz people will start asking why his daughter is still with him leaving the husband. Kid will also start asking, why dont I have dad. She wont tell? People will tell about her great character and her great grandpa. Then she will learn lesson. But just before some thing untoward happens, go and tell her, if she wants to come, come now, she will come, if she comes then life-long she will not bark at you, she will just stay like a plant with you ! When she comes back, dont shout at her, dont slap her, just be quiet, your silence will be the best weapon.