Don't confront your jhitani and risk creating bigger drama and straining your marriage. She does these things with the hopes of getting under your skin, making you angry, and hurting your rep. If you confront her, you're letting her know she succeeded, so don't give her that satisfaction. As for you reputation, you can refute her words/gossip with positive actions toward your in-laws. What makes things easier for you is that your jhitani already doesn't have a good image in the family. You were annoyed....that's understandable.....but now move on so that you don't hurt your marriage.
She is throwing tempting/ provoking one-liners one or two a day.. but I m simply ignoring… its really tough.. because I have every answer to shut her up… I am just not doing that to avoid any drama and providing her satisfaction!!
Didiiiiiiiiiiiii 
ye Cafe walay suggestions Cafe main hi diya karo.. 
