You might disagree, but I blame my sister for keeping me out all night
Did she kidnap you?
No, but she might as well have, I couldn't leave without her noticing.
You should not blame others for your behavior. If you want to repair your relationship you should try to plan something next time to get home at a decent time.
Yeah but she's pretty persuasive.
But you're an adult. Your sister doesn't dictate how late you stay up unless you allow it. Next time, don't blame her: set some boundaries