I feel like a TERRIBLE mom

Last night my 5 and a half month old woke up hungry, so I put her in the boppy on my bed to feed her. I was waiting for her to fall asleep more before I put her in the crib, but I guess I fell asleep too. The boppy was in between my legs so that way there was no possible way I could accidentally roll on top of her. I woke up to a "thud" and crying. My babe had somehow rolled off the boppy, over my legs and onto the floor. Luckily we only have a mattress and it's about 6-8 inches to the floor. The boppy was still in between my legs, still intact. So I have no idea how she managed to do that 😭 shes never rolled out of the boppy. Shes not very good at rolling over in general. I cant help thinking I'm a bad mom for falling asleep before putting her in her crib. She definitely seems okay. She cried for less than a minute and went back to bed. She has woken up since and she definitely seems to be acting normal. I still cant help but feel so terrible.