After ME wat i think-1) If Radhika heared and saw about Barkha's intentions then i think she will not to tell dev about Barkha's motives..b'coz all PF also Dev think that barkha give a big sacrifice for RPti..so may be Radhika will make a plan to fall barkha infront of dev and PF's eyes..and then they all will know about barkha's bad intentions..and now Radhika will realize her mistake wat she did??and now again for sake of RPti she will fight against barkha..
2)But if Radhika not heared and saw Wat barkha did then may be Barkha will tell radhika that don't know how dev be unconcious..and she trying to help him to get back in concious..so may be again radhika will thankful to barkha..
but one thing if radhika will again manipulate by barkha then wat will happen in SR..barkha will leave to divya-kutir..or may be she will lit the fire..or SR will happen between radev..