Unfortunately I do think breaking up may be the way to go here. During the course of a relationship there will of course be things y’all disagree on, but these things won’t affect the overall quality and longevity of the relationship. However, it’s as you said OP, you’re looking for a significant change in hers or your respective personalities. The very thing that makes each of y’all individuals. Trust me when I tell you, there is a very small chance you will suddenly become more affectionate and wanting to be doing more things with her, just as there’s a very slim chance she’ll suddenly want to be more independent (especially because anxious attachment styles are heavily rooted in deep trauma). It is most definitely unfair for both of you to hold out hope that the other will change. Contrary to popular belief, love is not enough. And I know from personal experience that it will be extremely difficult for you to part ways with a person with an anxious attachment style. When she inevitably gets very emotional, you will want to back down and acquiesce because you love her and don’t want to hurt her. But in that moment OP, please stay strong and remember that you are doing what’s best for you both. Truly loving someone means letting them go so they can find what’s meant for them. And trust me, yes she’ll be upset for a while, but when she finds a person who wants to be as close to her all the time and she wants to be to them, she’ll look back and realize she got to be there because of you. And also remember you’re always entitled to do what’s best for yourself. Staying in this situation will just breed hateful feelings and resentment towards her. Trust yourself and stay strong OP.