Wife can file case under section 498 A ,406 of IPC read with section 2,3 of dowry prohibition act against you and your parents
2) she can also file DV case against you and your family
3) in 6 months no of incidents may have occurred .does not make your case strong
4) burden of proof is upon wife to prove her allegations
5) FIR can be quashed only in exceptional circumstances
6) if there are specific allegations made against you and family members it will not be quashed
7) take the plea that wife had taken her streedhan with her when she left the house
8) your mother can file DV case against her daughter in law if there is shared household