Zuza suffers from knee injury. That's why she retired at second tournament in Japan. Hopefully she's healthy for Eddie Herr and Orange Bowl. She will probably play doubles too there (if healthy) with Paulina Lewandowska (who suffers from knee injury as well).
Hopefully she doesn't harm herself in America as the surface for Florida tournaments will be played on green clay this year which could cause an injury for players who don't know the surface.