1) your daughter is not a child . she is fully grown adult
2) there is no question of custody of adult daughter
3)keral high court in case of Rajmohan M.S vs State Of Kerala in WP(Crl.).No. 373 of 2009(S)
held A person who has attained majority, is in the eye of law, a person and a citizen entitled to all rights and privileges under the Constitution. There can be no question of an adult major woman being kept in the "custody" of anyone else against her wishes, desire and volition. Even if it be the parents, such custody cannot in the absence of better reasons be justified.
4) There is no contention that she suffers from any debility which obliges her to be in the "custody" of any other. An adult major woman residing with her parents or husband cannot be held to be in the "custody" of such parent or husband as to deny to her, her rights to decisional autonomy and to decide what is best for her. Parental authority would certainly extend until a child attains majority
5) The theory that until marriage a woman must be under the custody and confinement of her father and thereafter in the custody and confinement of her husband cannot possibly be accepted in this era. Such an adult person is certainly entitled to take decisions which affect her. Parental authority or matrimonial authority will not at any rate give right to such parent or husband to keep such woman under restraint, confinement or detention against her will.
6) The parental authority may extend to advice, counsel and guidance. But certainly, it cannot extend to confinement, detention or improper restraint against the wishes and volition of the adult major daughter. Right to take decisions affecting her will certainly have to be conceded to her even assuming that, decisions taken may at times or in the long run prove to be not wise or prudent