It may be, and I'm not questioning their integrity here, that they are using the money for the hungry and the homeless. Be advised, though, if you give to them you are giving to the needy through Hare Krishna, a group that has faced some severe legal problems lately and has been the subject of very serious felony indictments. Even more critical, it's an organization that's promoting false religion. Just as a rule of thumb, whenever anybody approaches you with an appeal for funds for any purpose, it's a good idea to ask them who they represent. If you don't recognize the name they give, ask if it's a religious organization.
Some groups have innocent sounding names they use as a front.
Keep asking until you're satisfied you've gotten the truth from them, because sometimes it's hard. The young lady said no . Well, not really. We're just a group of people trying to help the poor. So beware, these groups can be very, very deceptive.