savannah monitor

[deecaster]

hello all........ I was sent to this site from another saying that there is a lot of knowledgable people here that could help me with my sav. Hopefully there are right.
A very quick run down....I have two juvies....got them from the same guy at about two months of age, they are now 7 months. One (that we refer to as the male) is doing great eats anything and evertything and is not shy about it. The other ( we call the female) is just not the same she has only ever took 3 pinkies (frozen/thawed) she eats crickets silkworm hornworm earthworms fine but not with that got to get it now attitude. I tried her on live pinkies last week and she has now had three of them so it does seem she likes live better. she has shed a few times but has hardly grown in size and just doesn't seem to have energy most of the time. I have never seen her go to the water herself to get a drink if I pick her up and put herin there she drinks where the big guy is in there all the time and uses it as his bathroom. They are both pretty laid back and friendly and they is no agression between them. I have brought up the idea of moving her to a seperate cage ....they are in a large cage 6 feet long by 4 feet wide they have a basking area with temps around high 90's hides and a water area in around low 80s they do have uvb lighting and well as out main lighting source in the room is uvb. They both get the exact same care the big guy does leaps and jumps when his rat pups are enter the cage and she is just like ho hum....sometimes doesn't even bother to eat....could this be normal for her? or should I move her to another cage?
or any other ideas that anyone could have I am listening.
Thanks everyone and sorry for the ong story