Dress alterations

Help please, I went to see my wedding dress yesterday for my second alternation appointment. At the first appointment we discussed adding sleeves onto my dress (it comes with extra material for sleeves), I said about the length I wanted them etc and the lady said we’d go through it on the next appointment.. so I turned up yesterday and she has already attached the sleeves to the dress, much to my confusion because she hadn’t measured my arms or anything so we definitely hadn’t gone through what I wanted them to look like.. I had sent her a picture of what they looked like on a model and said I wanted the same, but she has cut them out and attached them straight, whereas I wanted them to be butterfly sleeves. I have big arms and they leave me no room at all, I wanted them to be flowy and they’re not. So, I didn’t say anything at the appointment, I’m quite shy and I don’t like correcting people like that, so I went away saying I was happy. I then spoke to my partner about it (he was super unhelpful, not that I wanted him to resolve the issue, I guess wanted him to listen) but he told me I should just ask if the sleeves can be changed. It took me a lot to build up the courage and I sent a message this morning, the lady told me no basically, she said the sleeves are on now and she doesn’t want to do any more altering to them.. she has suggested putting them into a cape sleeve but I don’t like the idea of that so I have said no and to leave them like they are. I feel so upset, I can’t change them, she has done them a way I didn’t want without me knowing and now I feel like I don’t want to wear my dress. It’s put me hugely out of my comfort zone to message her and ask them to be changed, only for her to be quite short with me and say no.
I don’t think I can do anything else but get over it?