General guideline for age/weight ratio.

[Stewart_Reptiles]

Okay, so it wouldn't be out of the realm of possibilities that she's a healthy 2 year old at only 350g's, now that she's getting steady feedings, proper care, etc. That makes me feel better!

Is it possible? Yes but there are a few thing I would check on also

#1 whether she is really a she.
#2 I would have a fecal done as well.

Not sure who you got her from but 350 grams at 2 years would be considered VERY VERY small.