Yes I agree with pp, there could definitely be some separation anxiety at play, but it could also be that she is UT for naps and needs to start the 2-1 transition.
So what you can do is push that first nap out and cap it, and then do a long PM nap, or push the first nap out and let her sleep as long as she needs, then do an afternoon cat nap. Regardless her morning A time needs to be bumped up, most at this age can easily handle a 4hr A time. I found with mine if I let them have the long morning nap then they would refuse to nap in the afternoon together, so I would cap the AM nap.
Something like:
WU 6:30
Nap 9:45-10:15
Nap 1:30-3:30
BT 7
Or
WU 6:30
Nap 10:30-12:30
Nap 3:45 for 20-30mins (many have to APOP this)
BT 7