Yes, that 30 min disturbance and able to resettle looks like a classic OT nap but it really does show that she can do a longer nap when tired enough. TBH given the choice I'd go for OT naps (even if I was to have to resettle every day at the 30 min mark!) which end up a good length rather than UT naps. The UT naps were a nightmare here, give me OT any day!!