Losing my Mind :(

[BrightEyes]

My 10 Month old knows how to go from belly to sitting position but has done it for the first time in her crib when I put her down at 1pm for her afternoon nap. The first 15mins or so I watched her having fun on the monitor. After that she cried and bum scooted around in her crib because she couldn't lay back down. I know it's best to let them be so they learn to get down on their own and/or not do it again. But when I go in and lay her down she sits up again and cries.

I feel terrible. What do I do? I don't want her to be so upset but I also don't want her to learn that if she does this I will go in and help her to sleep. (She goes to sleep on her own)

Help Please!