When I was finishing up my A-levels and deciding what to study at degree level, the standard advice was that if you thought you might one day want to work with computers, to not take a computing degree (because at the time they were regarded as lower-quality than more traditional subjects), but to take something like maths instead. I don't know if that advice continues to be given, and I can't think of an obvious reason why women would pay more attention to it than men, but maybe someone else can?