J.S.
Welcome to Mamapedia and excellent first question!
Buy another woombie.
our 90% percentile in size baby boy slept in one until about 9 months old - which is coincidentally the largest size we could find.
Your daughter JUST got out of a room the size of a womb - literally. She finds comfort in the confines, and as you point out - she can't control her hands yet.
She'll let you know when it's time to switch - she will become a little houdini and you'll find her awake with both arms free making hand puppets or something.