I had a “friendship” like this for the past five years and recently distanced myself. This person never invited me to a single thing. Constantly posted pictures of herself on fb with other friends. And then complained to me about many of them. Can’t believe my self esteem was so low that I accepted that as a friendship. Your case might be different since you’ve invested many years in what seems to have otherwise been a good friendship. I would definitely speak up kindly to her about it. In my case I went from politely trying to distance myself but always allowing myself to get pulled back in and it ended up with tension and some animosity which I never wanted. Avoiding speaking up when something bothers you always ends seems to bite you in the butt eventually.