There's no way shakti's quitting. You can tell by drashti's post that it isn't her having made the decision to suddenly quit, but it's a creative decision having made by the makers and drashti definitely agreed on a mutual basis. Shakti won't quit because this story is abut his character's infidelity and the consequences, so now they are going to show kunal suffer, for which they aren't going to let go of shakti, and neither will shakti decide to quit.The only thing that disappoints me about all this is that till her last breath nandini will not regret having had the affair with kunal and breaking mauli's trust and heart. She will die still thinking her and kunal's love was divine and she will have no remorse for her betrayal towards mauli. I wanted to see a realisation on nandini's part on how mauli has always done her part being her best friend, whilst she failed being a friend miserably by only taking from mauli and ditching her, whilst mauli was always there for her when she needed.