I responded, because guess what? I like being with her.
Did I say "Gamora, you can't hang out with anyone but me, ever?
No, I did not.
If your sister has a problem with something I do or say you'll know it, because I'll be bleeding out on the floor.
What is your issue, exactly? Because from here it looks like you're just looking for something to bitch about. Got a problem with your sister? None of my business. You have a problem with me, lay it out straight. Because, I'll hear you out. Until then, you have at least three options: Put up and shut up, take a nap or hit your stash.