Here’s a little more detail on what part I think your talking about =
She left the leader only to get kidnapped by her ex
He abused her into thinking the mafia leader LI was the one abusing her
Eventually, leader came & ‘rescued’ her and she went to hospital
Then there’s an art scene of the MC & LI in a hospital bed with her all bruised and (u get the point)
At some point she wakes up still under the illusion that the leader was the one abusing her and they make up with each other later on, go on to get engaged then married etc…