Yes Aakash knew abt witchita. As like her other plans became futile this plan should also badly fail.
To make the story little more interesting Maya bua should start teasing witchita like we saw few days ago. Paridi should start suspecting witchita. She can even put a word to prateik also (we didnt have their romance for a long time). The Scindia family should slowly realise that someone from the house is behind all these actions. Paridhi can warn Aarthi regarding this though she may not believe and finally she should see the true face of witchita.
But this time Arya should not go in the way FORGET AND FORGIVE method. Rather they have to be very strong in reacting to her evils unlike towards Mr. Dubey .