Sorry...I can only think of Mortal Kombat when I hear the name
Sonya. I don't really like it, but I like it more than
Sveta. I like
Svetlana more than
Sveta too if the beginning sound is wha t you're after.
Sasha is one of I love on it's own and as a nn :). I think
Sasha and
Anya or
Sasha and
Sonya would sound good together