My 13 year old DD is beautiful, makes friends easily, bright and funny. She has always had a huge imagination and loved fantasy play, writing stories and reinacting scenes of movies. She has same age peers with whom she sociallizes appropriately but at home I am growing more and more concerned about her "play." She sits in her room with the lights off and chats out loud to imaginary/pretend characters. She will also laugh and get loud enough to be heard downstairs. She is not hallucinating, knows the imaginary characters are not real and does not "hear voices." She is aware enough that socially this is not appropriate for her age to do in front of others so doesn't at sleepovers or in front of friends. It's exactly like what you may see/hear your 3-8 or 9 year olds doing when they play together-acting or pretending to be princesses , movie or book characters. My DD does this-like fantasizing out loud. I day dreamed a lot as a kid/teen-just not out loud and kept this private. Dd doesn't do this in front of me and will stop if I open her bedroom door. she does know I can hear her though and if I tell her to keep it down she will briefly stop or just continue more quietly. She and her 10y/o brother will sometimes talk to each other in silly voices or briefly play pretend but he is out growing this kind of play. I've talked to her about this multiple times. I've told her she might want to express her imagination through writing stories (she loves to write), drawing, creating scripts or comic books. I've also told her everybody has fantasies but that they are usually kept private ans shouldn't interfere in every day life activities. Still she chatters on to herself when alone in her room. Should I leave this alone? Is this a sign something is wrong, immaturity.. what? I'm worried.
Dh and dd just give me "that look" and know not to ask who I am talking to. I tend to process exciting events this way, kind of retelling them in a story. I guess that is really strange, huh? 
