Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Sorry for poor formatting and/or any spelling mistakes in advance.

I'm 16M. I have exams coming up and have assignments due which I used my laptop for. I used my laptop for writing these up, researching where needed and when I wasn't doing any of my school work I was either on Discord with friends or watching Netflix. 

A few months ago, I was doing school work on my living room table. It's relatively high up and my sister unless seated would not be able to touch it. I get tired after around 2 or 3 hours of doing my school work and I close it over, leave it out of reach to go to my room and sleep. When I wake up, I come back to see my laptop on the couch (other end of the room) with my sister next to it. I check my laptop, it's completely broken. Screen is half dead amongst other things.

My brother (13) had given the laptop to my sister to watch whatever nonsense she's into at this time and left her with it.

I speak with my mum and she tells me it's my fault for leaving it out, that there's a 3 year old in the house. But as I said she could not get to it if she tried! 

I was mad. I've been using this laptop for school work for 3 years and now I have nothing to do school work on and my mum won't even let me use her laptop for my school work. 

I'm left to ask, AITA?

getting mad at my mum that her 3 year old daughter broke my laptop