K.H.
I think you would be hard pushed to find any 4 yr old that can wipe themselves and do it properly , and it's a pretty tall order that is being asked , given the fact that the average child in this country potty train between 3 & 4 yrs old. She is only going to Pre k after all (I assume half day) so really what are the chances that she will need to to #2 while there? I say back off , don't push and she will learn how to do it when she is capable. No harm in showing how to and letting her have a go , but realisticly she won't be a pro at it until she is maybe 6.