I'm not familiar with the support that Theta Nu Xi provides to its alum organizations and housing corps, but I'd advise you to contact whoever advises those groups. I'm sure the national organization has a great prescription for your situation. This kind of stuff shouldn't come up and really, as long as the active chapter is doing alright, alums should just smile and write checks
However, when the going gets tough, that's why you have a national organization to turn to.