So Varga was not ....
... really a villain? He seemed to be following Semira's orders because he felt that was best for the Eastern Coven. When David's right to lead the coven was established, Varga followed him instead and fought side-by-side in the big battle against the covens.
I can't imagine that Selene is too thrilled with him because he helped Semira drain Selene's blood. otoh, Selene died (or went to the other place or whatever) and that's the sort of thing that changes one's perspective. Certainly she was able to meet her daughter in her visions - and she clearly had been feeling her daughter's rejection throughout the movie.
🐲