I've got parts that developed to be functional. The abused parts don't come out much. This can be frustrating since it's harder to help them. Everyone has been different. Sometimes getting a "stuffie" they can hold has helped. Sometimes they will pull pictures out of a magazine which I can paste into a collage. Sometimes non-dominate hand writting or drawing works. Sometimes getting in a meditative mood and listening or holding them works. There were a couple that asked me not to look at what they did in the journal until we went to the therapist's office too. Sometimes just snuggling under a pile of blankets and watching a movie is good too (pick movies carefully). But I think your instinct to help them is a very good start.

Just because parts don't come out doesn't make it harder or easier. The challenges are the same.