V.B.
My son doesn't ask over and over again (he's 2), but he will have a screaming fit sometimes if he's in a mood and we don't give him what he wants. I will first send him to timeout and if he won't stop or it escalates (which it sometimes does since he is doing it for attention and he isn't getting any attention in timeout), then I send him to his room. I just put him in his crib with some toys and/or books and tell him when he stops the screaming, he can come out. Then, I leave and close the door. When I go back to get him, he almost always stops the behavior. I would warn her that you heard her and that you will either get it in a minute or if you have told her no, explain that she will not get it no matter how many times she asks. Then, tell her if she keeps asking, you will put her in timeout or send her to her room (however you decide to handle it). I feel like my sanity is saved by putting him in his room where I don't have to listen to it. He can scream if he wants to, but I don't have to be party to it. That is my only suggestion. I know how frustrating it is, but I really think the only way is to give a consequence and then follow through. This should teach your little one some patience and that no means no. Good luck!