I'm starting to outgrow one of my best friends (help)

Sorry if this is rambly but I just really need advice on how to adress this with my friend or resolve it internally with myself, thanks if you take the time to read

Me and one of my closest friends are both seniors in highschool right now, we've know each other since 7th grade but recently I just can't stand being around her and just feel like we fundamentally don't get along anymore. My bestfriend D and I are extremly different people, I've always been really independent and assertive while she tends to be more withdrawn and dependent as well as pretty differing interests in music, tv, etc etc.. I'm someone who bonds quicker with people based on shared interest and we used to have more similar interests or I would get her into something I liked and vice versa but it seems like we can't even do that anymore. Most notably though anytime we try to hang out we really have no options because her parents are so restrictive on what she can and can't do. I tried to go see Nosferatu with her earlier but her parents said no and so I tried a PG movie a few weeks later and they also said no again because they didn't want to drive her (we live in an area where you can't drive until 18) The only places we can hang out is either our houses or the mall but everytime we go to the mall she ends up spending a lot of money in the first hour and spends the rest of the day complaining about how she spent so much and went above her limit and while I don't mind looking out for my friends occasionally and nudging her to say "maybe you don't need that" or just to be more aware of her spending, I end up having to do that the entire time or else our mall trip ends early because she can't seem to have fun walking around without buying stuff. In general I just feel like I'm always babysitting her and recently I've tried to stop doing that because its not fair to either of us but I also don't want to let her do stupid shit you know?

Towards the begining of our senior year I wrapped up my university applications (I'm only applying to the UK through UCAS) and I've already got 3 offers (yay) and she's still working on her college applications and shes applying to colleges in the United States through CommonApp and for some of them she kept trying to ask me for advice. I tried to give some advice but I always ended my bit with encouraging her to talk to our senior counsellor who's whole job is to help us out (shes the goat I love her), I even offered to go with her to ease her anxiety but she completely ignored my advice to talk to the counsellor. I know that doesnt directly impact my future or anything but it just ticked me off seing her ignore my advice to go talk to someone who could actually help her out. Finally, its just hard to hang out with her because of how overprotective her parents are. My parents are really lax with me drinking and going out with my friends (I'm still subject to safety rules obv) but her parents are really strict about her not being able to go downtown without them being there and she can't be out late. I can't even be mad about that because the way our parents enforce rules I don't think either way is wrong it just makes it harder to spend time together outside of school and I always end up feeling guilty when I go out without her.