What's the word I'm looking for?

One of my favorite clients, a fifth grade girl, was talking last week about how her brother locked her out of their apartment. She explained, "My mom was at my tia's house, but when I called her she was not disposable." It took a second, but then I realized what she meant- "disponible," available. She said it again, "I was yelling at him to let me in and I tried to call her again, but she still was not disposable."

Perhaps I should have corrected her, but I didn't. I understood what she was saying and that was the point, to hear the content and the feelings and not be concerned with vocabulary. And I'm selfishly glad to have that moment just for myself.