Dear E.,
Well, the teen years are hard on everyone.
You need to do a little reading - start with the internet and see if you get any clues about what to do.
You really shouldn't have told her to get out, you know. But that is done now, and you have to find a way to forgive yourself. I don't know what to tell you. Maybe some of the other mommies have good ideas.
The reason that you exploded is because you were so surprised about her changed personality. That is one of the reasons that I suggested that you study about teens and what is going on inside of them now. It is very complicated and even though I know that they are pretty irritating, they need some TLC and advise - which they will not follow - and a home to come to to feel comfortable in. and on and on.
That telling them to get out of the house is very old fashioned advice that has come down to us from the 1800's and even further back. I know, it sounds crazy, but when was your grandmother born? or when was her mother born? or where ? I say that because that is where you got your disciplining ideas from. I tell my sister ever once in a while that she is letting our grandmother - who was born in the 1860's - yes - rule her child rearing ideas. Umhum that is right.
Life is extremely complex now - even more so since you were a teen. We need to dig deep and think about what the heck is going on in this world NOW.
Sorry about being so blunt. C. N.