Question???

umm i havn't seen virrudh in some time but i do come and read it here ..but i am not sure wuts happening with DRS and VEDIKA ..why are they after vasudha like crazy? i dunt get it? i mean i remember watching the episodes bak in the time when he was sick he wud cry whenever vasudha came front of him. i dunt get it. wut is wrong vedika i thought she loved her sister. I knoe that shreya hates vasudha. umm can someone plzz tell me wut is going on? was DRS just pretending to be sick or somthing... And why is vedika after vedant? umm can someone please clear this confusion? thank you