I love my best friend so much

I was upset at work tonight , it was because I wasn’t earning much money and we had an issue earlier which I caused without meaning to and i had about 4 hours sleep but I came out of an dance and my friend thought the guy had been an arsehole to me and she was going to go and sort him out. I had to keep telling her it wasn’t his fault , but she wasn’t listening and she was going crazy threatening To sort him out and she kept telling me go point him out. I had to really convince her it wasn’t his fault. She’s gotten super over protective of me and wasn’t that bad before. We have gotten even closer in our friendship and I do feel a bit worried because I don’t want her to hurt or leave me and I don’t want to hurt her either. We have only been working together for about 2 months but we known each other for a year before I came to work with her but we only talked occasionally on Instagram that’s it. But since we have became so close in such an short space of time I worry about getting hurt or hurting her. And I don’t want any of us to get hurt.