I HAVE A HEADCANNON ABOIT THAT! Well, technically, my whole family does but still... Maribel does have a gift but the house didn't tell anyone becuase the house wanted her to help her family. I think her gift was being able to see people thoughts, like, what's going on in their head at that exact moment. For example, when Luisa was singing, she was originally on Earth, right? When she started talking about her feelings on the inside, they both got teleported to another dimension of some sort. When the song ended, they were back on earth like nothing happened. She was teleported to the inside of Luisa's mind becuase of her hidden gift