She sounds pretty awesome! No NFs..wow! Lucky mama:P
I have 2 thoughts -
1. Since she is easy to resettle, maybe she needs a little push in A times. It is possible that she needs a bit more in order to transition
2. This is what we did -- For a week, be in the room at the transition time and when she stirs, just place a hand on her/ and if needed gently pat - basically settling her before she fully wakes. After that, we backed off totally and found that she made it through
At the end of the day though, she is just learning and it could be that naps will naturally extend as she gets older. WWYT?