I love the visuals!

Music is lovely too. After some time it feels like there are 5 or 6 different tracks playing at the same time.

Not quite sure what to do in this game though, apart of walking in and out the house.

Cute art and great music.

I think you should allow the player to move with AWSD too.
Maybe you should add footsteps sounds. Some houses don't have collision and Valentina walks through colliders. And you should hide the actual colliders.
The music doesn't loop, you should add a settings menu.
The cat seems to walk faster inside the house and that's a little disorientating.
Inside the house a quarter of the screen is black, it doesn't fill the screen but i did have that issue using gamemaker once so i get you in that one.
When moving up and down the image_xscale changes so the sprite movement looks weird.
When you get out of the house you just get teleported to the initial position of the room instead of the position of the house you just left. Maybe write the coordinates in variable definition inside the collider and pass it to two globals for the x and y positions the cat should go when going into another room and teleport it there when the room starts.
Changing rooms doesn't stop the music from playing so you end up with music stacking over each other resulting in something scary.
It doesn't look like there's a goal.

I think you could get more reviews if pleople could play it on the browser.  I can see that you have browser version available. Hope this could help

Good game! Beautiful visual! I give you 5 stars! Could you rate mine too? :)