You've received some good advice already.
Yes, definitely don't start right off with a bow - Daisy likely won't be impressed with that! I would begin with a band - it's lightweight so she won't be as aware that there's something in her hair. Make sure you don't pull the hair too tight as this will likely irritate her. Use a band for a few days - or until she doesn't seem to notice it any more. Then try to add a tiny 3/8" bow. Pick a lightweight bow (nothing with heavy embellishment/center) - the less she is aware of the bow the better. And, once she gets used to that you can try to move up to a lightweight 5/8" bow (if you want to go a size up that is). It's a gradual training process - but if you take it step-by-step and slowly, Daisy should adjust. It sounds as though she loves being groomed so she'll likely love looking even more beautiful with a bow.
Good luck!