The game tell "you" instead of "I"
The wolf she draw looks like the cartoon one
go behind TV and it says you can't watch it from there (Zelda? XD)
eat sugar twice and it will say "Too much sugar .. You don't feel so good"(Infinity war ? XD)
it will say you are scared of the radio if you try to listen it another time
on the second day the TV show you the eye of the dream
The paintings seem to show places?
If you watch the cartoon on another game it will not show, only a description
The portrait of the unknown family member is upside-down on the second day
The chair in TV room change each day
the dryer turn into a wash machine when everything collapses
everything getting red on the last day is related to the lonely girl except her picture on the photo (not sure for the paintings they all become red)
on second thought the diaries don't become red so it may be everything related to the other world, I thought that because her drawings were red but it is simply because, she drew things from the other world. The parents went to it too so it might explain why they disappear on the picture. Also it may prove the paintings are the other world but I have no idea who painted them. Also boxes become red but no way to know what was inside
On the last day she drew some more pictures of things, but I am not sure what they are.
Melody disappear at the end of the game. Knowing the other world change appearance and Temmie love dragons so much she wrote she wanted to become one when she was little and we see a dragon in her animations of this world appearing suddenly, I have an idea of what happened :) edit: They also have the same colors! Here is the fight where he appears: https://www.youtube.com/watch?time_continue=82&v=zD06fwGHNlc
She actually drew her wolf version on the walls of her room, we can even see it in her dream in opening animation, I still don't know what it means SINCE SHE BECOME LIKE THAT ONLY AT THE END??? (T(I)EM PARADUX?)