The gallery is something important to her for which she worked very hard and if they divorce right away she would lost t. That's why she's putting up with it.
On the other side ml is trying to uncover in secret if her husband really did kill his older brother. And if fl knows about it or was a victim too. Fl didn't know that her past partner Taemin had a younger brother and what are his motifs rn that's why it's so complicated

i read the entire 1-39 and i feel like i don’t understand . so basically fl’s husband cheats -> fl knows but stays to gather evidence and have complete ownership of the gallery -> fl’a husband’s older brother died by suicide but foreshadowed to be murder -> fl thinks fl and fl’s husband was involved ?? someone tell me if i’m right cause i’m lowk considering dropping this with how frustrated i am because of fl