Hi there! So for yesterday, that first nap was likely 45 minutes because the A time wasn't long enough. LOs this age can usually handle 75-80 minutes of A time, and she only had 55. That first A time is generally shorter than the average A time, but at this age it's a matter of 10-20 minutes... I'd have tried 65 minutes. Then the next A time needed to be shorter, since you need to shorten A time after a short nap. Getting the first A time/nap of the day is crucial to the rest of the day. The rest of the day is kind of all over the place, but you just need to remember to shorten the A times after short naps to prevent OT. When the LO is OT, the jolts and transitions are harder for them to get through, settling at all is difficult for them. If you are having a day where OT seems to be ruling... then put baby in the sling or swing and just get some decent sleep out of her.
HTH, please let me know how you make out!