after divorce how to evict wife from my father's self acquired property

Suppoused to file for eviction suit,and while the divorce case was going on why you failed to agitate the matter.

When it is self-acquired property, even parents can ask their children to go out and can make a complaint to collector for harassing a senior citizen.  Now Central Government has formulated such an act, and I am not aware as to whether it was enacted or not.  Even District Legal Services Authority can involve in this issue..  If she is an employee and without children, it is easier to evict her as per laid down law.

It is your father's own house in which she has no rights either to stay  or to claim any share in it.

Since your father has initiated an eviction suit, he has to follow the suit regularly by due process of law.

If he is a senior citizen then he could have followe the route for senior citizen's welfare act also.

Once the court has dissolved your marriage by  decree of divorce, she has no rights to claim residence from you also.

Admittedly, suit for eviction is pending. Try to expedite.

Do not rely upon obligation of experts on this platform, although it is available FREE OF COST,  which is based upon limited facts posted by you, which can differ from real story.

It is advisable to consult another local prudent lawyer for better appreciation of facts/document, professional advise and proceeding if you (or your father) has lost faith in the lawyer engaged / paid, who is well aware about facts/documents of the case, an able, competent and intelligent enough to satisfy you and your father..