I (17 female) was home alone today, my parents were at my aunts house and they brought our dog with them. I’ve never been home completely alone before because I’ve always had our dog, an Akita, there with me so I’ve never really felt unsafe. My sister (22 female) doesn’t live with us. I was cleaning my room and heard a door open downstairs. I have a lot of pocket knives because my grandpa gets me one every year for Christmas. I grabbed my phone and a knife (This one is about 4 inches) and went to the top of the stairs. I called out and asked if my parents were back early but no one replied, I walked downstairs and my sister jumped out to scare me, panicked and stabbed her in the stomach. I called 911 and we took an ambulance to the ER and our parents met us there. Apparently she was dropping off a vacuum she borrowed and my parents forgot to tell me. That was a few hours ago and so far it looks like I missed anything important and she will be ok. But yeah today I stabbed my sister 🧍♀️(on my phone sorry for format)
TL;DR: I was home alone and my sister came to return a vacuum, she tried to scare me and I stabbed her