Friend needs prom dress help, ASAP?

So my friend is going to Prom in two weeks. She decided a bit back she was going to use a dress her older sister had in her closet (really nice dress), but she had to go get it resized to fit her. So she got it fixed up, and just got it back today, only to find that while it “fits” it’s a bit tight and actually makes it difficult to breath.

So she’s in a bit of a situation. My suggestion was to call the lady who did the adjustments and say “hey you messed up and I need you to fix this asap.” But apparently the lady is on vacation and won’t be back for a week.

Her options seem kind of limited. She’s concerned she won’t be able to get anyone else to fix it in time (or at all since they’d have to make it a bit bigger). She could go out and buy a dress, but again she’s concerned that she won’t be able to get any alterations done within the 2 week time limit.

Has anyone got suggestions? Advice? What have you?