female leopard gecko not eating

Question
My boyfriend and I own 3 leopard geckos. The two older ones have been mating for a while now but the eggs never survive. Then about a month ago when introduced a baby gecko to them and she has laid two sets off eggs, and this last set she laid about 4 days ago. And she has not eaten for about a week and now i'm concerned about her she is getting very skinny. what can i do?

Answer
Kali,
I'm not sure which one you are saying is not eating..the adult or the young one.  
There are several things that can be causing it. Her calcium levels might be low.  Do you gut load her insects with a good insect food(not the gel stuff) and also dust the insects with a good phosphrous free calcium?  Do you see any eggs in her now?  She may have an egg that did not come out. Have you seen her digging or straining at all? Eggs not coming out or breaking inside can happen with young leos.  If spending all her time in the coolest area, thats generally a sign of illness of some sort.
Has she been drinking?  She may be dehydrated.  Try offering water from a spray bottle and if she tolerates it, give her a soak in a warm, shallow pan.  Try offering her some watermelon.  She may lick at the moisture on it.  Try offering some baby food chicken.  Generally just touching their nose with it will cause them to lick at it. If none of that works..and since
her tail is loosing fat, then she really is loosing weight and a Vet is the the best course of action to find out why.

 I would give her a setup that is separate from the male.  They actually shouldn't be housed together anyway other than a short period during breeding season.  Also, housing a baby with adults can be deadly for the baby as the adults will take bites out of the little one.