I used to do this at work. It was based entirely on my confidence level. I compulsively apologized because I fucked up so much. It went away after I got better and more confident in my trade. Maybe try building up her confidence in areas you find her compulsively apologizing in. Does she do it more in certain situations? With certain people?
Nah nobody hates you for it. People more often than not will just feel kind of bad for you, because people understand it comes from a lack of self confidence. I don’t get annoyed when other people over apologize, at least they give a shit enough about my opinion to do so.