I would gently advise that you leave the piano issue aside for maybe quite some time. Give yourself time to work through the grief, the ramifications of which none of us are prepared for until the shocking event. You need to work out what you want in your life and to accept that as child it was not, and is not now, your responsibilty to fulfill your mum's dreams and expectations. Grieving is a long separation process, part of which is learning that it's OK not to want the same things as our loved one. Learning the piano is difficult at the best of times. It's hard enough as adults to cope with our own frustrations and unreasonable expectations, let alone having to experience learning as some sort oflegacy that we have to fulfil. Maybe piano wasn't your thing as a teenager, maybe it could become your passion, maybe it never will and other things will fill the void. It's all OK.If you do decide to learn, for yourself and because the itch is there and won't go away, I would suggest going with a teacher rather than flail around the self learning route. From what you describe it seems to me that you'd always be bogged down thinking what would mum have done, how would she teach it, what would she think ... put yourself in the hands of a detached expert, who will guide you through the missing bits and pace you properly. This must be when you are ready and when you don't experience it as some sort of betrayal to your mum. No wonder you didn't manage to go the first time. All the very best. It will get better x