Ha I had the same thing today! Put him in his bed at 12:30 and didnt go to sleep till 1:15!
For us it's a combination of teething and OT that's not allowing him to settle very well.
For you, I'm not sure... it sounds like the 2.5hr nap yesterday was too long. I'd say she caught up with the 3hr nap on Thursday but then allowing her to sleep for too long on Friday has led to her being UT again. The UT/OT loop can be a hard one to crack!
The way I usually do it is add up what you think is her TOTAL sleep needs for a 24hr period and adjust naps according to how much night time sleep she had the previous night, allowing for any deficit left over from bad sleep at daycare.
You didnt say how many hours sleep she had on Thursday night, but I think I would have capped her Friday nap at 2hrs.
Another thing to consider is overstimulation at daycare. If she didnt nap at all there on Wed do you think that was because she was OS or did the daycare just not try hard enough/provide the right setting to get her to sleep?
Otherwise if you just cant figure it out, you can try doing set naps and bedtimes for a few weeks to see if things start to stabilise. I think as they get older it becomes less and less about A times and more about getting their body clocks set into a consistent pattern. But you'd have to have a word with daycare to get them to help you out and adhere to the set nap times (and about their effort of getting her to sleep).
In fact set nap and BT's might really help her (if you can get daycare to come to the party) as its possibly the lack of consistency thats disturbing her sleep. Do you think her NWings are habitual?? See if you can figure out if they're always around the same time.
PS: About the sign, I dont think Wellington even needs to copy Hollywood, after all, Hollywood is now copying Wellington(Weta)!!