AITAH for telling my mom theres no food in the house

So basically i come from a one parent home its just my mom (60F), me (21F) and my brother (24M). I’m currently not working as I’m focusing on my schooling, my brother works occasionally (on a 0hr contract) but doesn’t contribute towards bills or household stuff. So basically everything is paid by my mom. (Im very fortunate to be in this position that my mom is willing to look after and pay for all of my living expenses and i am no way trying to seek sympathy).

So for the past month maybe two she has started paying for my brothers driving lessons and stuff which is pretty expensive, (We never had an issue with having no food in the house since before this) meaning we cant afford to buy as much food anymore.

For the past couple of days I’ve just been kinda surviving on what i can, like yesterday i had a frozen lasagna and a bag of chips and the day before i had some spaghetti bologna and some popcorn. I was talking to my friend about this as I’m normally big on food and eating so its not typical for me to eat this little and she sent me some money so we could buy some groceries.

I went downstairs and told my mom that we can go shopping she questioned where i got the money and i told her a friend of mine is lending me some money and i told her because we have no food, she then gasped and said “liar! You lied to her” she seemed insulted and like i had just said something outrageous. She then walked over to the kitchen opened the cupboard and freezer and showed me saying “look we have a pack of biscuits, some crisps and some frozen fries anyone would laugh at you if they saw our cupboards”.

I was shocked for a moment not really knowing what to say and i just was like “oh but like i mean real food” then she pointed at the food in the freezer aggressively and started pulling it out (bags of quorn meat and frozen fries and onion rings) and was saying “is this not real food to you” i cant remember what it was exactly but i said something in shock and then just went back upstairs to my room and we haven’t spoken since.

I felt bad and i sent my friend back her money and im just deciding to not eat now im questioning if its because im being a fat pig about food.

(For a bit of a backstory i struggled growing up with my mum as she would only feed me frozen food and junk food as i dont think she sees that as real food u can eat everyday and at some point social services stepped in and told her she was neglecting me etc but that another bag of worms however i think that made her especially reactive to what i said)

But anyway am i the asshole?