My (16F) mom is a single mom of 6, including me, they go from 2 to 14, the three oldest (12, 14 and me) try to help her as much as we can since she has two jobs, my dad and I get along just fine, he and my grannies give me an amount of money per month ($300) since I turned 13, I usually took $100 for my things, I give her $100 for bills and I return $100 to my dad to have an ''emergency'' fund since one of my brothers and I have asthma and I want to make sure that I have money all the time, my mom doesn't know about my ''emergency fund'' and thinks that I only get $200 a month.

She respects ''my income'' most of the time but with 6 kids and a big house she smooches all of hers pretty quickly, so when my siblings wants something like pizza, clothes or some ''fun money'' or things she asks to ''share'', I do it cause I love my siblings but sometimes I think it's unfair since I already give her $100.

Two days ago one of my brothers (9) broke his ankle while playing outside and we had to take him to the hospital, when my mom tried to pay they declined her card and she freaked out, I called my dad and asked him to drop some of my emergency money for the bill and the medicine, he did and we came home.When we were alone in the kitchen she asked me for the money and I told her that I had some aside since my grandpa recommended me to have an ''emergency'' fund because things can happen all the time and it was formative for me, she asked how much I have saved and I told her that right now I have like 2k?? maybe, she started to berate me, saying that I shouldn't hide money from my family and told me to give it ASAP to buy some thing we needed.

This is why I might be the asshole, I told her no since the money was for emergencies such as my brother's and that the things ''we needed'' aren't. She says that my brothers (twins 2 & 4) needs some shoes and pants and that she also needs a new laptop for work, but that's not an emergency and even if it were, it's her job to buy those things. I told het that THAT was the reason I never said anything about the fund. She called me an ungrateful brat for ''not helping her more'' and sent me to my room, she said that I better give her the money by the end of the month but I don't know if I should.

EDIT: To clarify, my siblings and I don't share the same dad. He's only my father.