AITA for not looking at my sister while we’re walking back home because apparently she is ‘tired’

Let’s call the older sister A and the younger sister B. So I was walking home from a marathon, only me, my sisters are just picking me up and accompanying me. So naturally I’m tired and my feet are burning like crazy because I wear the wrong shoe for a marathon, I was walking at the front with sister B while talking about what happened today and stuff and before that my mom gave sister A like pa lot of money to buy food for us and she held it because she always thinks she’s the best choice to hold money. When we arrived at our apartment building, there were like several shops and convenience stores at the lobby so we planned on buying food there and headed up but when we entered the shop, Sister A searched for her bag and didn’t find the money our mom gave us. Me and Sister B were telling her to check somewhere but she kept on being mad and then I said something like ‘How did you lose it, didn’t you put it in your bag?’ and she gets offended that I said that and blames me for not turning around when we are walking home and checking \*HER\* surroundings on the ground. I mean like naturally why would I check the ground around her!? and plus, she keeps on saying she’s tired and stuff but honestly she never did anything, the whole day before she came picked me up she was asleep like the whole day based on what sister B told me. Sister A always said things like she is responsible and can live on her own but she didn’t even put any effort to find a job like seriously didn’t. No checking jobs online, even my mom has to go out and find a job for her and she doesn’t even want to go and asked the details herself when my mom told her the location of the job but that’s off topic.

I don’t wanna sounds inconsiderate but it’s so annoying because things like this always happens and she never want to take the blame and always blaming me when I asked her how she could make a mistake, like I understand everyone make a mistake but at this point it’s like crazy how she can’t go on without making small mistake for example, forgetting her card, phone. Plus she never had any head problems or something she is completely normal!

Another thing is she always thinks she is the most responsible, smartest in the family and always lazy, she never wash any dishes at all and doesn’t cook when that’s her job in the house and she’s always whining about tired tired tired. And also when I’m complaining she will be mad at me because I’m complaining. Sister A is 19 btw.., maybe in society standards 19 doesn’t have to work but my sister want to loan a car but she doesn’t want to work and get money..💀 plus my mom couldn’t afford to take care of everything.