My 12 DD is having trouble with recurrently biting the inside of her cheek. She bites and bites until there's a big painful wound, which swells up and makes her bite it more. It gets worse when she is anxious. When she was younger she had a nervous cough which just went away after a few years, so I've just been ignoring, but recently it's making her really distressed. Dentist said just try really hard not to bite it, but it's a compulsion and she can't.
She won't engage with any relaxation stuff that I've suggested. She puts cotton wool in when she's at home but then it makes it worse when she goes to school. Anyone had this before? Did it get better on its own or should I be getting her some CBT or similar?? She is a worrier overall and has become quite stroppy and demotivated recently. When it's really bad she is begging me to stop her biting but I'm at a loss for how to help.