Hi there
I am no expert on this, but I feel your pain...I remember those kind of naps!!! I would think that she's OT if she's waking up crying, but again, I'm no expert and I hope someone else corrects me if they think otherwise.
Some other thoughts-can you bring up her bedtime a little earlier to help her get back on track?
On a side note-does she sleep through the night? Do you do a dream feed?
Is there a chance your DD is overstimulated before you put her down?
What kind of wind down routine do you do with her?
Is there any difference in the activities that you are doing before you put her down for a nap when she sleeps longer?
Now, in retrospect, I used to do waaaay too many overstimulating activities with my LO which resulted in her crying.
Perhaps writing everything down, in order of which activity you did, and when, for several days, might give you some insight if the activities have any impact on her sleep?
Hope some of this helps!