Is there someone you can talk to about the sleep and isolation? A therapist, counselor, doctor, clergy, teacher, trusted adult?

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Maybe when she is an adult in a year or so you will have more freedom to speak with her.

You could spend the next year working on improving yourself, so as to be a better boyfriend and support for her if you get the opportunity (or, if not, for someone else). More maturity is in order: avoiding inappropriate talk, being honest with your parents. What else might you want to work on?