I completelyyy agree Nitzy!
Even if it seems that the show is getting overloaded with characters...I would still want a sister-like friend for Abhay =)
We definitely need someone like Lexi on this show, to help Abhay see the positive light of things and also someone that Abhay can share his pain and miseries with.
If EK does decide to bring up a character like Lexi's from TVD...she could either have some connection with Metz such as a friend of Metz who supported Abhay-Metz love story, or just someone Abhay met after Metz's sad demise to help him cope with his vampire instincts.