Here's what the letter said (translated from Portuguese):
Hi, my friend.
I've noticed that you've been crying a lot when you're alone, and I've been through this phase.
I talked to my mom yesterday and together we decided to give you these toys, so you have a distraction when you feel alone.
I'm here to make you an invitation: I live alone with Mom and, because of that, I have a room of my own to horse around in as much as I want, so you can spend some time here with me! We can do a lot of partying together!!!
We hope you enjoy the things we gave you!
Many kisses from Corote and of my mother Nichole.