Am I talking to myself?

 Am I Talking To Myself?

About a month ago I was playing Bloxburg for about 4 hours straight in the same server. I played until I was the only person left in the server. Nothing weird was going on, I was just building a little chill loft. So I was alone in the server for about 30 minutes, then this odd Roblox girl joined. I noticed and opened my chat. The girl just typed in "Hi" right when she joined. I said, "Hi, how did you get into this empty server?" she replied with, "magic."

The girl was acting strange, she was telling me I was annoying or something when she was the one typing to me. So in about 5 minutes, she left, and my friend meganmaster9 joined my game. She is a very best friend on Roblox, and I even called her sometimes, so I can trust her. She said, " Are you Talking to yourself?" I said, "what do you mean?",

She replied with,".( my name.)( what are you doing?" I said, " This weird girl joined my game and I was talking to her..." She said," Are you going crazy or something?" I was like Megan don't you see that girls chats?? She replied, "No". After that, me and her left the game. We were so creeped out after that.