The key to this is how accurate is the diagnosis of 75 IQ. Based on replies so far unlikely OP has this IQ. she seems quite capable of making up her own decisions. Having once been labeled as having a sub typical IQ. how much is her autism confounding the way her parents view her capabilities.
Exactly. But then I'd take it a step further to imply that such a metric itself is too flawed to even be applied in such a manner. Let alone by a society or professionals who may treat it as "gospel".
In essence that ironically IMO an "accurate IQ score" amounts to an oxymoron.