can relatives file 498 ?

I guess itr is not possible ...example she hit you with iron road. You dont make call to police , even if your neighbour call police , then police will inquire from you and if you says nothing i simply fell fown from stairs then police cant fo anything ...

second - one condition where inlaws mention that your wife is so scarred and in depression that she is not ready to come to police station also ...i guess police will take complaint and as usual without investigatin, ( they wont investigate at all as we all know) 498a will be filled .

I am not a lawyer ....

@ author:

seems u r in tension for  hw to file on behalf of someone to her hubby
or
hw to defend if someone file on behalf of her.

No. Relatives cannot file 498a. Only a wife can file 498a. Even if relatives file such 498a, it needs wife's signature. Complainant should be wife, not relative of wife.