Just 1 preschooler and myself in the house.
We have 1 cat. She is very quiet and doesn’t need any care while I am not home.
She keeps to herself and will likely spend most of her time in my room.

You’ll have to keep a preschooler occupied.
She likes to do arts and crafts and do something to keep her busy. There’s tons of stuff to do and play with though!
You might need to get snacks or heat up food but only the most basic kind of food prep.