itch.io

Go to the green boundary with your mother and head down, enter the portal and open the chests that you will find there. One contains the Icy Charm and the other one the holiday costume for your mother (the missing character in your theatre is her with this costume)

You're welcome ^^

the plant I fed was the red one at the right and it worked

I got both endings available for now, and I read the tablet in the blue boundary, is there anything else to do there, like a way to make the elf let you pass?