a little shocked a little hurt

Lilley has two friends over today and they went into her room to play...I went in to check on them and Lilley looked and me and told me to go three or four times...as I was walking out the door she held the door, waved at me and said bye bye, then the door closed in my face. I was in shock...she is too young for that right? I felt a stab of pain, she didn't want me in there.