your wife has no right in our father's self acquired property.
if she had been staying in the house which was her matrimonial home, or if you stay there an don't have any other house , then she can get an order of accommodation under protection of women from domestic violence act,2005.
However injunction on your dad's property is not justifiable , court may not grand this.
You need to defend it strongly the court will not be misguided by her side of pleadings.
sthreedhanam for under which act,depending on the facts of the case you should defend her claims.She will have to prove that her streedhan has been detained/ taken by you, for that she will have to produce the documents of bills , photographs an d other and details