I can empathize with you along with many others!
The SPE Chapter had a cleaning but are returning slowly but surely. My Chapter, Hm, I was ready to recommend just shutting down or cleaning, but they have done it themselves.
We too have had problems getting International to help but with a lot of nudging so to speak, they have decided to work us.
As an advisor, you can only Advise, but, remember, your Hdq. will listen to you a little closer than just Chapter members whether The Actives beleive it or not!
If there a Faction that is rending The Chapter, then it is the time to find out and get it corrected before there is No Chapter. Get it out into the open and just put it "Like Here is The Situation, How Long Do You Want To Be On Campus?" "Do you want the Soroity to close under your watch?"
Is there an Alum Base to work with or are they also disgusted like mine for the most part are!?
Remember, people will dissapear into the wood work when times are tough, but when times are good, they love to ride the winning horse!
Good Luck, and PM me anytime if you so wish!