As you're probably already aware, if she's regaining some mobility then it's most likely due to an injury. Even though they've been housed for so long without problems I'd watch 'em like a hawk for awhile.
Unattended feeding is probably the leading cause of aggressive behavior among monitors that are typically compatible.
One thing that kind of concerns me is I don't see enough calcium in their diets. You may well be using calcium products but you didn't mention it. Lack of calcium can lead to MBD. MBD = mobility issues. May I suggest adding more whole prey items, in the way of rodents.
You didn't mention humidity level. Low humidity can lead to impaction, which in turn can lead to mobility issues.
One other thing - Is that basking temperature high enough?
Have a good one!
HH
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Due to political correctness run amuck,
this ol' hillbilly is now referred to as an:
Appalachian American

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