1. Well since the house is in the sole name of your father, your mother can not claim share in it.
2. However in the context of PWDV Act, she can claim her exclusive right of residence therein , even at the exclusion of your father.
3. Ask her to initiate such case aspa and include such prayed in the case.
4. long with this she can claim monthly maintenance for herself.
5. Given the years of services she had invested in raising both of you, she is entitled to one time compensation amounting to several lakhs of rupees for which she will have to claim such relief in the same case under PWDV Act.
6. ASK HER TO RAISE HER VOICE , AT LEAST NOW.