Dream About Home Invasion 911 Failure

someone broke into our house and my mom heard them first so she went to see who it was, she tried telling them to leave and tried to protect me but they wouldn't leave, they said we had to leave if we wanted to live, i tried my best to find something to fight with but i couldn't find anything and the kitchen was too far away to reach, my mom came into my room and said we needed to go now, so i agreed and tried to follow her out but the person who broke in stabbed her in the chest as we were leaving. i started to panic and i couldn't fight them, i tried to call 911 for an ambulance but they wouldn't pick up and it wasn't working, i kept trying over and over but i kept mistyping the number or being sent into different apps