She looks healthy to me. I understand the "new mom" anxiety- I'm raising my first snakes ever from-baby size... I'm constantly fluttering around wondering if they're gaining weight at the appropriate rate, lol. I wish I could switch them to rat pups. The pet shop agreed to start ordering them for me (they sell everything live and I only desire to feed live) but last week they ordered yet no pups came in ): Still they're doing okay on mice.
Correct me if I'm wrong, but your girl will gain weight slower because she's well, a girl. My 2012 pastave was born in October and is just below 300g now. My bumblebee male is hatched in January 2013 and he's close to doubling his weight from 145g in early late May / early June. You just expect them to grow at this rapid rate lol.