Im 17, and my mom is big on everyone else answering their phones. Its to the point we've gotten into arguments about it, and some have gotten pretty nasty. The only thing is, its rare for her to answer hers, like, way too rare for her to get onto anyone else about it in my opinion. Today my older sister was stung by a wasp, which she's severely allergic to. I tore apart all our medicine baskets, we have about three or four, in search of an epipen or some antibiotics. I was in such a rush, i couldn't look thoroughly through them all, so i needed to call someone who knew them well, my mother. I called about three times and left voice-mails, with no response. I feel i made it fairly obvious, even without hearing the voice-mails, that this was an emergency. I gave up and helped my 76 yo grandma drive my sister and her baby to the ER (i still dont have a license or permit). Thankfully, she got treated about half an hour later, an hour after the sting, and i hear after some rest she was a-ok. Before i know it, about 3-3.5 hours go by and i decide to call her again, and to my surprise she answers. At this point, i explain what happened and the following went something like this: me: "What happened? I tried for way too long to reach you, we needed your help" mom: "The girls we're watching on my phone, you know how they get" im already irritated, me: "Yeah. Well we spent potentially life threatening amounts of time-" she cuts me off "Well what did you spend it doing, you should've-" Im livid at this point and cut her off, yelling. "IF YOU WOULD LET ME FINISH, I WOULD TELL YOU HOW YOU COULD HAVE AIDED YOUR DAUGHTER NOT SUCCUMBING TO ALLERGIC REACTION" i got most of the way through this sentence before she hung up. Then, she has the audacity to text "I understand that you're frustrated, but i will not be talked to like that." Im at a loss for words, im more concerned about my sister's health than my own mother. "Im far beyond frustrated, im absolutely livid. Call your daughter, and be thankful that you're able to." I managed to hold back many hateful things i really wanted to say. I was really angry, but at the same time, my younger sister are little princesses used to getting what they want. They have my moms phone more often than her, so i dont think im able to blame her entirely. But at the same time, if she'd put her foot down with them, it wouldn't be an issue. Tell me reddit, am i the asshole?

TL;DR, my sister had a severe allergic reaction, and i couldn't reach my mother during the search for critical medication.