R.K.
I know you say she has all her teeth but are you positive that her 2yr molars aren't starting to come in. My 18 month old starting to get one of his and my oldest got his early too. She could be dreaming or if she isn't waking up she could be having some mild night terrors its not uncommon for those to start at this age. If her feet are getting stuck she's old enough that a bumper poses no danger my boys always had bumpers in there cribs if they are put on tight and fit the crib right they are fine. A toddler bed is the exact same size matress as the crib so putting her in one probably won't help too much.