IDK if they are friends, they have been competing in juniors tour for a long time, maybe she wanted to see how her "old friend" is doing in the pro tour. But if I remember right she said somewhere that she is getting along well with russians.
Anett Kontaveit @kontaveit
Somebody left a pack to the Estonian tennis federation with my name on it. Inside was a fan letter and a bra... #creepedout