Pulling up and Getting back down?

Ava has gotten really good and become more confidant at pulling herself up. However, she is still pretty nervous getting back to the seated position. Its funny, I've talked to friends and seen other kids at daycare just "let go" and let themselves fall backwards. Nope, not Ava. She carefully bends her knees, gets one hand firmly planted on the ground, and then lets the other hand go, plopping down on her butt. You can see what I mean in the pictures below.