Did Abeloth weaken during her imprisonment?

Is FOTJ Abeloth weaker when she escaped from her prison or was she the same level of power as she was when she first turned.

I don't recall it being stated that imprisonment had weakened her, per se... mmm

I did not get such an impression.

Abeloth siphoned energy from the populace of Coruscant to fuel her power and/or acquire the strength to manifest in the form of several avatars to defeat as many opponents as possible. Ironically, she miscalculated her chances with this strategy.

Yes.