I had a fight with my sister. Yesterday, I was busy doing my homework, we have a problem set to be passed 8 am in the morning the next day when my sister come up to me to fix the bed so she could sleep(we share the same bed), I was up with my computer the whole day and didn't even touch the bed (it was her mess). She got mad at me for not doing what she said and today, when i went to bed, she's shading me because of what happened yesterday. I feel bad because that was the only night I didn't fix her mess in the bed, she's not even doing anything.