Very cute. Love the difference in art style between the game and mom. When I'd level up in the game I'd often accidentally pick one of the options before being able to read what they were since I was trying to shoot enemies.
I love how the game device shakes when you shoot, so that interaction is juicy, but other interactions could have a bit more feedback. I also would like if the fan had a sound effect when you use it to cool down mom. Would also like a sound effect for when she starts to get really angry, or when you are hurt in the game (particularly useful while looking at mom). Maybe a sound effect for when the player is low on health as well, or a visual change on the game screen to help add intensity (like a vignette and heart beat or alarm sound or something like that).
Moving around inside the game also doesn't feel very useful since enemies spawn at the edge (so being close to the edge makes you more vulnerable while fanning mom) and you kill each enemy so quickly anyways, so it seems easier to stay still and just shoot enemies as you see them. Movement not being useful also makes a lot of the power ups useless. Moving would be more useful if you could fan mom at the same time, so you can actively dodge enemies while fanning mom, but that would require having both mom and the screen visible at the same time.