Most Helpful Girl
I can already see girls posting "hug her" "love her" but I can tell you this isn't usually efficient. If you caused her anger... Apologize, and give her some space. For example you could say "I know you're angry with me, and I'm sorry. I'm sure you don't want to talk right now- so I won't push it. Would you like me to go?" If she says yes leave and tell her you'll come the moment she calls. If not, stay and talk with her or simply leave the room... Space always helps.