I crave for my ex-wife [ Kim Namjoon]

The cup of tea was in my hand and it was very hot, I was going towards Sana, she deliberately moved her leg towards me and I bent forward and the cup fell from my hand, the cup fell near Sana's hand more than that. Tea fell on my hand but she started shouting, everyone's attention came towards us.
Aunt Somin: Oh no look, this wretched girl has burnt my daughter's hand, oh God.
First of all, I am in pain and on top of that, this woman and her daughter are blaming me.
Namjoon's mother: Y/n, what's all this, we know you are jealous of Sana but that doesn't mean you will hurt her in front of us, apologize.
Y/n: apologize? but why I have not done anything; she deliberately moved her foot towards me so that I fall.
Aunt Somin: Look what a rude girl she is, she commits a mistake and then blames my daughter.
Namjoon's mother: I know why you are doing all this, you are not a part of this family, Sana is like our daughter, not you so you are jealous of her, now apologize to Sana.
Y/n: I have not committed any mistake for which I should apologize to this girl,
Namjoon's mother: How dare you?
Namjoon: Apologize to Sana
All this was unbearable, my husband did not believe me, what could be sadder than this?
Y/n: It is not my fault so I am not going to apologize.
Namjoon angrily gets up from his place and comes towards me,
Namjoon: Apologize.
Y/n: No
I feel a sharp prick on my cheek, he slaps me, now what could be more humiliating than this, my eyes filled with tears,
Namjoon: Don't you dare to lie Y/n, I know you very well, Sana is not like you ok , why does she hurt herself huhh! She's not cheap like you , so don't think I will trust you , this is your cheap tricks ok.
Y/n: I will still say that it is not my fault.