You might have added Crystal Dangerfield to this list, although she now appears to have found a home in Dallas. And MoJeff seems to have found a home in Phoenix, albeit for a bad team. Another example is Natisha Hiedeman of Marquette, who has certainly found a home with the Connecticut Sun. But all of them struggled to stay on a roster at first.
Nika is bigger than most of these players (a key attribute) and more rugged, although not as quick or fast. If she tried to guard any of those named above, she would have a hard time keeping them in front of her. But many slightly slow players with other skills have managed to prosper in the WNBA -- I'm thinking especially of Katy Douglas, although she was never a point guard.
I like the Dojkic comparison -- maybe there is a prototype of a Croatian PG that they both adhere to. Dojkic is strong, fit, cool under pressure, and she can shoot, but she has trouble guarding quick opponents. Nonetheless, she is prospering in the league, and I think Nika can do the same.