Third person

Hi my 4yr old daughter has been refered for autistic referral by our health visitor. One of her behaviours really concerns me she can be playing happy one minute then its like she is fighting and arguing with herself as a third person also hitting she then tells me Poppy hit me or Poppy threw my toy she is very distressed during this. She will just clam afterwards or cry for a time and want to be held. Has anyone else experienced this.  (She is called Poppy)