I’m so upset

So mum had a family gathering at her house to plan my dad’s birthday.

I went outside for a smoke and I could hear her in the kitchen talking to my siblings saying that I’m slut and I’m always busy because I’m looking for a man.

Which isn’t the case, because I could care less about a man and how could she know when I’m studying my a** off.

She thought I didn’t hear anything and later talked to me normally like she didn’t call me a whore but I just ignored her and left the house.

My own mother talking down her daughter to her other kids... what are your thoughts?