I am on mobile so I can’t format this correctly sorry

My mom always struggles to find birthday presents for me because I have always bought the things I need or want by saving up my own money. I came across a limited edition hoodie (once sold out it’s gone forever) that was $60 dollars. I’m fully capable of ordering the hoodie myself but sent the link to my mom and she agreed to buy it for me saying “I’ll buy it later today”. I replied with “the hoodie is limited edition so please buy it in the next couple of days”. My mother gets very annoyed when I remind her about things as I have a habit of doing it too often so I waited two weeks to ask if she had gotten it. Turns out she forgot and now I’ll never get the hoodie that I really really wanted. 

AITA for getting mad at my mom even though I could’ve reminded her to buy the hoodie or is she the A-hole for forgetting the one birthday present I let her buy for me, therefore leading the hoodie to go out of stock?