Hello, welcome to BW forums
Could you give us a little more information please?
What was her regular routine before the disturbance started? (BT, any night waking and normal WU time in the morning - so without the nap)
How long ago did she drop her nap? How long was her nap and how long was her night sleep before she dropped the nap?
It sounds like you might just need to cut that nap out again as she is relying on it to top up her shorter night sleep but it will be helpful for us to see the bigger picture if you can answer those questions.