Responses
That is an interesting theory. But I think that she might have a disorder, because of which she is always trying to get the 'perfect' ending the people surrounding her want to see.
Everyone says: "They are the perfect couple, they suit each other."
She: "Then I have to become this perfect picture so they will like me."
Or something like this...

Plot twist: Sooah actually likes mirae and wants kyunsuk out of the picture.