Should i invite my ex best friend?

Hi all! I'm having some trouble making a decision on whether or not to invite my ex best friend. We became friends 14 years ago and she was always fun, supportive and easy to talk to. A few years ago it felt like she was slowly becoming more selfish. When she had a problem I was expected to drop everything to be there for her but when I had a problem she would quickly change the subject back to herself. My family didn't like her and my now fiance didn't like her, saying she was rude and selfish. The last straw for me was her insisting I take a day off work to take her to the city because she "didn't feel like driving herself"and getting angry with me when I couldn't. I decided then I needed some space and we didn't speak for over a year. Last year we saw each other at a friends wedding and we stared speaking. We've been speaking more lately and while I'm not interested in going back to being as close as we used to be it is nice to know we can be friendly again. I know if I didn't invite her to the wedding she would be hurt as we used to have plans to be each others maid of honors and she does seem genuinely excited for me. My family (who are paying for the reception) and fiance would really prefer she wasn't invited and advised very strongly against it but left it to me. I feel like I would like to invite her and her partner to sort of extend an olive branch and take the high road. I also feel that it's unfair that I never complained about guests that my parents/his parents/my fiance have invited who I don't particularly like or want there but they are so against one of my potential guests who they like coming. Should I invite her and her partner or just leave it? Thanks!!!