Had a quick look for info about Davo as never been there and still under the weather and just waiting for motd.

http://www.davaocity.gov.ph/Files/DI...GOs%202006.doc

This is a link to a download of a word file which if you scroll down has pilpina legal resource center inc and possible other groups which can give legal advice. On this web site i also found aanother word file that gave the avg price of many things in davo, which might be quite handy for someone, but not sure how up to date maybe peeps who know Davo can tell us?
http://www.davaocity.gov.ph/Files/Co...iness_2005.doc

Not sure how handy but worth possibly your girlfriend contacting them to see if they can offer any advice?