Hi! Ive been working on the game a bit. I fixed two things. First I added the hability to close de dolls (uneject as you say hahaha) by maintaining down the eject button. And second, i fixed the Undo function which did not always worked before (by pressing Q).
The pause menu should be working. Its activated by pressing P. In there, you'll find an option to restart the current level. But you could also have found another bug...
Thanks for checking out the game and the feedback! :)