Just for another point of view,
My best friend was my bridesmaid and she got gastro,
She didn't come as planned for the make up or hair and had to leave early, I was a bit sad but now a few years later I am just really glad she was there.
LIfe has a funny way of changing our plans sometimes without asking, Imagine how you'd feel if you delayed the process and tehn something else happened to interfere.
All the best with your decision and everything that follows..