Whenever she does not get what she wants, my 3 years old daughter would say that we don't love her. What should I do to discipline her? I do not want to spoil her.

My 3yo girl always kick up a fuss and go "I don't want you!" when I don't grant her wishes. It's quite frustrating when we think we have their interests at heart. Through some time, I find that listening to her really attentively helps her try to communicate back with you. Also, it's no harm giving in for little requests such as I want sweet, as long as you can compromise only 1 sweet a day. Over time, it works. My daughter seldom fights back now. Instead, she hugs me first thing because I attended to her and listened to her communication.