I mean, maybe there's a reason behind it. After all she loved the blue eyed guy very much but she didn't bother to go after him cause she loved her sister just as much and her sister was to be engaged with him but after she found out the engagement is broken she realised she might have a shot just to find out he already had someone else? And also she said leaving the ring is to be considered suicide, maybe it's true and she actually trying to not let him...you know...DIE. and also you seen her hate silver hair she probably only decided to help him cause it might save blue eyed guy in her own way. ╮( ̄▽ ̄)╭
I’m sorry but that girl deserves more than just being kicked out of the house after what she did to Chung.
This bitch also has the audacity to come back and help silver haired dude?!?!??