I'm not 100% sure but I believe around 2 -2 1/2. Most nights she sleeps normal, curls up under her log in a little nest, or she leaves the pillows on the hammock and sleeps on those, or she'll sleep just flat on the hammock but occasionally she ends up in these funny positions with her head on the glass.
This was another funny one from like 4 months ago lol. It doesn't happen often but when it does I just have to chuckle and snap a quick pic before repositioning her. I love her so much. She's got tons of personality and she's so sweet.