I agree, and my story is similar to yours, but I still don't think ANY deaf child should EVER be denied the ability to learn and use sign language, regardless of whatever else their parents are doing. I'm glad I can lip read as well as I do because of my oralist upbringing but it would have been nice to be able to learn sign alongside that, and I'm not just judging all this based on my upbringing. It's just kind of common sense. I can't imagine nor have I ever seen anyone say "well, my upbringing is different than yours, I am glad I wasn't allowed to learn sign".
For me, signing is less tiring (than speaking) and so much easier for communication. Do not need to ramble? on with lots of useless words to make point.
Plus, I've always been, how say, artistic so love to describe. Maybe ASL beginning contributed to that, too. Ha! Maybe my Mum knew what she was doing afterall.