I am in the tombs and must fight Tanova, but she stays inside her little bubble and I can't seem to pop her pipe dream!
Any advice would be helpful!

Pierce magic, a level 6 mage spell bursts the bubble. If you can't do it yet, at least use true sight to break her mirror image, and use all the defensive spells you can (bless, prayer, protection from evil '10), and send in some summoned fodder to take the first confusion/domination attacks. Apply Daystar's Sunfire ability. Use dispell magic to break her confusion and domination. Maybe have Jaheria summon insects right away.

Yes, True sight, Warding whip and any high level anti magic spells'll do the trick.
Also had my thief pepper her with "dispel" arrows.