I'm an APO member too!
(Ok...now I had to do math and realize that yes, there ARE female members of APO old enough to have college age kids. Yikes I feel old!!) I don't think she should start an APO chapter unless she really wants to be into the service component and that isn't being served on her campus.
As with anything else, the amount of effort a new chapter of any kind of group would take really depends on the members involved.