Need some advice please, my 15 years old DD suddenly stopped brushing her teeth every day like she used to do it, I need to remind her all the time to do but even when I tell her many times she won't do it, she said I will but eventually she doesn't, it's so frustrating. I feel bad nagging her every day but what else I can do? She goes to the dentist every six months, never had cavity, she knows consequences of not brushing as I explained it to her many times! Should I take devices off her? Will any kind of punishment work? She is big enough to understand what will happen if she won't brush, just trying to understand her behaviour but I struggle with that, she has good hygiene routine, baths every day, hair is being washed every other day, teeth unfortunately neglected, what should I do??? Anyone had similar experience? Anything helped?