My friend hooked up with my another friend

Last night I organized a party at my place. Around 20 people were there. They all were my friends but many of them didn’t knew each other before this. And two of which hooked up in my housemates room. Girl was badly drunk but guy was in senses I believe. Now the girl is not comfortable because it was her first time. I’m feeling terrible for hosting a party and I don’t know what to say to her.