Hebrews 13:1-2
1Keep on loving one another as brothers and sisters. 2Do not forget to show hospitality to strangers, for by so doing some people have shown hospitality to angels without knowing it.
Give with your heart and let God judge her.
@Ashley28: God doesn't want us to be doormats. Sharing and giving to missions, shelters and reputable charities is responsible, but I seriously doubt that means to give to those we know are liars, thieves, scammers and those using the money for drugs. 4951