It’s a bit early to start worrying what your mom will say if you get a job one day…hey, you’re 12 now, but you are bound to one day get a job at some point in your life, right? So don’t stress yourself out thinking about the finish line.
TOS aside (I have no idea if there’s an age limit on FCC) my personal feeling about anything that involves education and self growth is, you are never too young and you are never too old. I was 14 when I started programming but back then it wasnt a thing, especially not a thing girls did, and people still thought computers were a fad. So I looked at it as just a hobby, not anything I could actually make a living out of. That has completely and totally changed. I think programming is a skill worth learning and at this point in your life, more than okay to start if thats what you are interested in.
As for your mum, I do hope she would be more supportive than to ask you what the hell you are doing! Just involve her…My daughter has always had an interest in art, and her entire life,she has involved me every step of the way. Even though I don’t know much about or understand much of what shes doing, Im super proud of her for all the work she has put into it and she actually started to get job offers when she was 15.
Even though you didnt ask what to focus on, Im going to say it anyway…focus on what you are doing right now which is learn development and let your mom in on it and involve her in your life…she may surprise you and be super supportive.