Not sure I understand the question David... the hair moves with her in an animation.  I grew it on a catsuit converted to dynamic cloth.  This gets around the need to have different groups on each body part and allows me to use all the custom body morphs I can’t live without.  It also gives me a handy way to transfer the hair if I ever need something like this in another project.  I just hide the body suit and leave the hair visible.  It is a VERY complicated solution to a very rarely confronted problem.  But I love trying to strive for realism… even though I’m not very good at it most of the time.