daughter prefers to act babyish

My daughter is almost five and she prefers to act babyish. There are times when it seems better and worse and lately it has seemed worse so I thought I would post to see if anyone has any ideas about a remedy that might help her leave this behavior behind. She talks in a high pitched voice, and has some stammering/stuttering, and her body movements are also very babyish-acting. Hard to describe online so that it is clear that this is different than just a typical four year old child "being a child". It's not like that. It's definitely someone acting like a baby. She also will go through periods where she gets fearful at night, and will use excuses to get out of her bed, saying she is afraid, misses me, or that her bed is too hard. That one is her favorite. Her practitioner thought perhaps pulsatilla was her type because she has the ability to switch moods on a dime, but unless what we are seeing right now is an aggravation or something, I'm just not sure it is the right one, or rather I should say, not the only remedy she needs. I had wondered about stramonium and would be curious to know what the experts on this board think about that, and also any others they think might fit her. So I guess you could say the biggest concerns I have for her right now are the acting babyish and the stammering problem; I had thought she might grow out of these but it's been going on for several years now. She is actually more baby-like now, than when she was a baby!