I almost felt disappointed that she went up there instead of coming to fall asleep beside me...
Until about 10 minutes later as I'm starting to drift into the twilight between awake and asleep, she seemingly leapt from the perch on the tree to right beside me, purring loudly and then kneading the blankets and spinning around until she found her comfy niche and orientation.
And so the two of us went to sleep last night. She was soon utterly zonked out,