It’s possible. Of course, there could be a wild card that we haven’t met yet. but, NCIS It usually gives very big hints and introduces suspects before they are caught. So at this point, it’s a raven for anyone.
We think the most plausible theory is that Vivian is not the raven herself. However, she may be in love with Raven, eager to do his thing and take revenge on Parker. It’s a win for Vivian either way! (It definitely amounts to something, that’s for sure).