Dante
Please note that I am not a qualified therapist but it certainly appears that you do need to talk with someone. I recommend finding an experienced gender therapist as there are at least 2 relationships in play - that with yourself and that with your mother. Having a more intimate and detailed conversation with yourself which is facilitated and supported by a counsellor is usually the best way forward.
They will help you understand yourself and your relationship with your mother, they can then help you articulate your feelings and situation, then role play and visualise a positive interaction and help you evaluate different scenarios.
Without knowing your situation, your history, your mother's history etc even making what would be 99 per cent of the time a highly effective and low risk strategy eg writing her a letter, could be problematic and potentially counter productive. In the meantime it is clear that you care for her and she is important to you. She will feel this. Seek advice and counsel and this will help you best address your situation.
Aisla