oh honey....i don't mean to trivialize your pain but really, you've GOT to get over this. get into her head, and on her level. she has NO idea. except she probably saw the gut-wrench on your face so now she will try it a few more times and see if she keeps getting a reaction.
hey at least it wasn't "i hate you" or "i don't love you" (which will probably come, so be prepared!) -she is perfectly within her rights to not like you from time to time. she SHOULD dislike you at times. that means you're doing your job. did you really think you'd get through this parenting gig and never make her unhappy? use "NO" - use it with no guilt and use it often. that's what moms are supposed to do. and yes, it will make her not like you. just because she said it instead of internalizing it - actually is a good thing.
get over the idea that she is your precious little adoring angel. that's not what mommy-ing is about. (ok most of the time it is - but you have to be the "boss' too!)
:) good luck! you'll be fine. (and fwiw, i don't believe disciplining this is the best way to handle it - first because she does have a right to feel however she wants to. she's not calling you names or being hurtful, she's stating a fact- she doesn't like you. you wouldn't put her in time out for disliking pretzels, would you? she isn't being hurtful deliberately, she's just stating her feelings. that's actually good. S., because disciplining for these kinds of things is just going to call attention to it, where if you just let it go, she will see it doesn't get her any attention or reaction and she will stop doing it much sooner.)
i love my child and my husband more than anyone else on this earth - but heck, even i don't "like" them sometimes. there are times they just annoy me and i don't want to be around them. i wouldn't punish my child for having honest emotions. it's how they deal with them that counts. stating them is fine. having a temper tantrum, throwing things, acting hateful - that's where i draw the line. everyone has theirs. if you insist on her never saying these things and disciplining when she does, i guess she'll quit saying them eventually. but she'll quit saying other things in the process. when my son tried this (yes, granted, he's a boy so likely there was a lot less drama involved when he did it lol) i just looked at him, said, "okay if that's how you feel, but the answer is still no." and moved on. you'd be surprised the things he confides in me now. i would never tell him he should not feel a certain way. it's all in how you handle those feelings. squashing them or telling them it's wrong to have them just causes all kinds of feelings of shame and failure when the child can't control them and feels like they are "bad" for feeling that way.