Someone asked to be my bridesmaid

Someone asked to be my bridesmaid & said “it is my dream to be a part of a wedding”. I guess to sort of pressure or guilt me into saying yes?

How on earth do I say no? This person has known me for a long time so it isn’t a stranger…. But I just don’t want them to be a part of it…. And the fact that she asked makes me not want her to be a part of it even more. It honestly kind of weirded me out lol