It is a ZBrush problem, Amorphium works just fine... Too bad, I really like morphing with ZBrush. I will try to figure it out, now I'm dead tired and I think I'll give up for now... Her face isn't really that bad, actually. First I thought she's really ugly but... a bit of morphing, a bit of post work... and she does look nice. The image I've attached here does have post work, but still I made it in about 15 minutes so you can estimate how much post work was done :P