She lost her temper
화를 터뜨리다

May: What's wrong John? You look worried.
John: Well， I need your advice， May. My sister let her friend borrow her car the other day， but the girl ended up in a minor accident with another car.
May: Oh， no. Was anyone hurt?
John: No. Fortunately everyone was all right， but the insurance will surely go up， and my mom can barely afford it.
May: Right. So your mom must have been really angry with her， huh?
John: Yeah. They had a huge fight and my mom told her to get out of the house.
May: And did your sister actually take off?
John: She did and she's living with my dad now. Mom just lost her temper at that time， but she really wants her to come back. Can you think of any way to persuade my sister?
May: I think your sister was wrong. But your mom should have insisted that she contribute toward the increased car insurance instead of kicking her out.

* ended up : ~로 끝이 나다
* barely afford it. : barely- 겨우 겨우， 간신히 afford~ - ~를 감당하다， 비용을 대다의 의미
* take off : ~를 떠나다
* lose someone's temper : 화를 터뜨리다
* kick out : ~에서 ~를 쫒아내다