Hi there, sorry you've had no advice on this for a few days.
You say you're new to EASY - so has she ever done a CN at that time? How does she go down at BT? Waking in the first hour or so after BT would be a classic sign of OT, for instance. Average A is 1 hr 45 -2 hrs at this age - so she is at the top end of A times. Perhaps she really doesn't want to sleep at this point? She will be shaping up to drop it by about 6 mos anyway.
TBH at this age I APOPd that CN with both of mine, knowing that I would be dropping it. With LO1, we got to snuggle up together in bed and have a sleepy feed (that was lovely
) and with LO2 she would have a short snooze either in the sling or in the buggy. I didn't worry too much about how long it was, and they just took a brief snooze to tide them over to BT.
HTH!