S.W.
To me it sounds like she isn't getting enough sleep. I found with my kids, they would wake up more at night when they were overtired. Seems ridiculous but was always true. Everything I read said a 2 year old should get 12-15 hours asleep. Try putting her to be an hour earlier and see if that helps. I know it seems early but can't hurt to try for a couple of days.
also nightlights, low music all night. If you think it is nightmare trying keeping a a hallway or bathroom light on at night to help it not seem so dark and scary if she wakes up a little. hope you get some sleep soon.
Updated
To me it sounds like she isn't getting enough sleep. I found with my kids, they would wake up more at night when they were overtired. Seems ridiculous but was always true. Everything I read said a 2 year old should get 12-15 hours asleep. Try putting her to be an hour earlier and see if that helps. I know it seems early but can't hurt to try for a couple of days.
also nightlights, low music all night. If you think it is nightmare trying keeping a a hallway or bathroom light on at night to help it not seem so dark and scary if she wakes up a little. hope you get some sleep soon.