Op, as said, you will not find many people on here supportive of not educating girls fully. The reason we do this is to give them all the options.
Ultimately it doesn’t matter what they do, what path they choose as adults, but as parents we see it as our jobs to equip them as far as possible and ensure they have options and are able to make decisions on their lives as adults, so they have the best chance of happiness and fulfilment,
Not being supportive of fully educating a girl is always going to derail a thread, because as women, it is something we fought long and hard to have the right to, to have equal opportunities, to live our lives as we as adults choose.
I think you will get better answers if you ask other mothers who you know who feel the same as you do. It will be hard to find one on here, and they will be drowned out by the chorus of concern for your child if you do find one.
Thr over whelming majority will be concerned about the limitations and expectations for this girl, and as much as she may be happy long term, fifteen is far too young to make that decision in most people’s views, so equipping her to make her own decisions, and give herself options going forward is key.