Thank you for your feedback! It is a horror game, but its a horror that builds as the story goes on. Perhaps it would be more accurate to call it a story or puzzle game, but I feel not categorizing it as a horror game would be misleading as to the type of content you'll encounter.
As for the "out of place" objects, thank you for noting that. All of the world assets are downloaded from various tilesets here on itch.io, and going through and style matching all the objects isn't high priority at the moment, but hearing that it is noticeable is good to know. If you remember where you found some collision errors (such as being able to walk on walls) it would be much appreciated if you could let me know where those occurred.
Mama referring to Rosemary's other mom as "Your mommy" is based on the language my parents used to refer to each other, but I will make note of your confusion to see if its a common note. Rosemary is 8 years old, but she has a lisp/speech impediment that is notable with certain consonants. Thank you for letting me know you were confused on her age, I will keep that in mind!
You're right about the controls not being communicated well. I will add a control prompt at the start of the game in the next update. I'm sorry you got frustrated with the items and where to use them, but as figuring out where to use things is an integral part of the game I do not see myself significantly changing the descriptions.
Similar to the item usage, the fourth wall breaking is intentional. It is interesting that you interpreted it as the player speaking to the character, thank you for sharing that observation.
Thank you so much for giving Frey Nel a try, and thank you for sharing your insights and feedback!