If you win, you can file Damage and defamation;
But some lawyer agree to file defamation even when case is going on and not decided.
all counter cases depend on the situation, as we are not sure what sort of FIR she filled.
You can counter her Every word if you have proof or you can prove her wrong.
Even you can sue her for giving dowry. such Judgment you can find here http://mynation.net/docs/sitemap/
and also read http://mynation.net/ipc.htm so you can make list of IPC you can apply when you file Counter case on her.