I'm Afraid of My Older Sister's Wrath

Hey everyone, this is Emma. I’m the youngest of three siblings, and while my older brother Tom can be a bit overprotective, it’s my sister Lily who strikes fear in my heart. She has this way of making me feel like I’m about to be ground into dust with just one look from her piercing eyes. Recently, I snuck out past curfew because my friend invited me to see a movie that I really wanted to see. But here’s the thing, I left my phone at home on purpose so Lily wouldn’t catch me sneaking out and track me through it. Now she knows something happened, but not exactly what. She’s been giving me these intense stares all day long, and every time I’m about to speak up and confess, she gets this look in her eye like she’s going to explode with rage if I do. Is it normal for a big sister to be so intimidating? And what should I do now that the secret might come out anyway? Any advice would be greatly appreciated.