Oh {hugs}! We had this the other day! I think it was because my dad was here and she was excited?. It's probably too late now, but we just did EBT at 5.45om. I thought we were definitely in for a rubbish OT night, but actually it was fine... She just woke up 15mins earlier than usual the next morning! I'm thinking as it was not an accumulated OT, she just tacked on the sleep she missed.
Also, the next day I was dreading putting her down for that pm nap, but she went down fine!
Hope your night went ok, good luck for the nap today!
Xx