We believe the only possibility is if she landed at the edge of the top, her weight would have lifted it up, the rest is a mystery. It is very tight so she couldn't move her wings to flop. My husband heard some odd noise once, went to check on them but didn't see any distress, never thought it was the feeder. The squirrels sometimes make noises too, so he walked away.
That makes sense.
Homemade electrolyte recipe linked below. I know not everyone has some nutridrench on hand and my farm stores carry sav-a-chick seasonally.
https://www.theprairiehomestead.com/2017/02/homemade-electrolyte-recipe-chicks.html