I had a somewhat short engagement and the seamstress only had about 3 months to work on my dress in the first place and I've had 2 fittings already but we are still on the muslin dress (seamstresses often make the entire dress in cheap muslin first and work out any issues with it then recreate it in the nice fabric to minimize any alterations to the nice fabric) and today my seamstress canceled the 3rd fitting (for unspecified family reasons) and rescheduled for next week. It's 3 weeks before my wedding and by next week it'll only be 2 weeks! I trust her to finish it but want to convey my unhappiness with the cancelation. Opinions? Does this seam unprofessional? How can I convey my thoughts without being rude?