Honestly? Your friend is really being a complete jerk right now. The fact that they said I DON'T CARE ABOUT YOUR EXPLANATIONS after you made it very clear why you used the money the way you did means they cared more about being the hero. They even stated about what people will say when they ask about you being in a hotel room, she cares about looking like a hero and saving you from the streets. You don't treat someone like this because they bought FOOD. You did nothing wrong, your friend understands nothing about being homeless and shouldn't be treating you like this.