I have a very close friend who I would love to have as a bridesmaid, but I'm sensitive to her personal responsibilities (she is a physician completing a fellowship, a new bride, and will be moving soon after my wedding). Is it appropriate to give her a choice between being a bridesmaid and doing a reading or should I ask her to be a bridesmaid and let her know she could do a reading instead if she is too busy? I want her to know I wish for her to stand by me on the day of my wedding, but I don't want her to feel obligated to take on the responsibilities and time commitment of being a bridesmaid. Is there an etiquette here I should know about? Thank you!