AITA for being frustrated with my mom?

I live in Florida with my husband. Back in march 2022 we moved my mom (45) and sisters (16/13) here into our 4bd home with us from texas. I agree to help my mom out for a year or 2 living with us. Well my mom has lived here two years now. She doesn't exactly pay a flat rate in rent or for other bills. She just sends money whenever. I calculated the cost and that not counting rent that's just utilities and shit. So technically she's lives rent free here. She just works and comes home and goes straight to her room. I get it I don't work I'm home all day. But I still pay for the bills. I just wanted help with dishes cause they pile up fast with 4 ppl. That was the first problem. She doesn't really try cooking atleast sometimes either. I feel like she lives rent free atleast try helping a lil more but in her head her being there shouldn't be a big deal cause wed b paying what we pay regardless and she shouldn't have to help cause shes never really home and hardly makes a mess? Anyways she's tired of living here cause she feels like we are assholes cause we feel we contribute more financially and she doesn't really help. So she wants 500 a month from me and 300 from my brother to help her move out and have her own place. I was annoyed cause I feel live I've already done alot to support her and she still needs more even tho she's a grown woman capable of taking care of herself. Instead of figuring it out by looking for a better job or a second job she expects me to help even tho it's been two years and she still doesn't have things figured out. Am I really the asshole for expecting a lil bit more outta her?

My calculations: Electric ~ 190 ÷ 2 = 95 Water ~ 100 ÷ 2 = 50 Phone ~ 70 Storage ~ 123 ÷ 2 = 61.50 Food ~ 150 Total ~ -426.50

May 2022-April 2024 356.50×12 = 4278 426.59×11 = 4691.50 Total ~ -8969.50

Zelle(Nov 2022)~ 5599 Cash app~ -1172.50

Total~ -2198