Dear Tylda,
I think I am going to hedgienap Tula... don't tell your mom though. She'd probably try and thwart my efforts. I know you are the queen of the house, so I wouldn't dare hedgienap you. And I know you offered Ollie, but it seems like he super needs your momma right now. So it must be Miss Tula.
I understand she is small, so your mom might not notice right away... especially if I leave a small stuffed animal in her place. I think if you or Ollie to sneak into her living space and eat the food your mom leaves for her and poop on her wheel, it will also help disguise the fact that she is not there. Maybe you could move the stuffed animal to different places (but always under some fleece) too? Can you do that? That will work... right?