O segundo livro é Thresholds de Nina Kiriki Hoffman. Há uma sequência: Reuniões . A partir da descrição do Google Livros :
Maya's family has just moved from Idaho to Spores Ferry, Oregon. She's nervous about starting middle school and making new friends, but soon that's the last thing on her mind. First, a fairy flies into her room. Then it turns out that the kids in the apartment building next door do magic, and their basement is full of portals to other worlds. She's bursting with new experiences and delight . . . and secrets, because she can't breathe a word to her family, not even when she winds up taking care of an alien!