Scary Multiplayer Glitch on Pocket Edition

My sister and I are spending three days in a hotel in San Antonio to go to Seaworld and the Alamo, and so tonight we were trying to join each other's servers, because we were playing minecraft. We saw this random person called Crab, so we joined the server. It was all glitchy! We couldn't collect stuff or fire bows, and this guy with a wooden sword was hiding in the woods and mysteriously came out and killed my sis! When I went in the water, I randomly took damage every now and then. When my sister respawned, there was a guy with her, and ANOTHER guy with me out in the wilderness was collecting clay! There were two! So we disconnected and joined a random server by a guy called Pandy. When we joined, I found out that the same guys were on there. The name Chloe was plastered all over the place, along with a death-hole and a swimming pool. I picked up a chat with one of them using some signs, and it turned out that we are all in the same hotel. They had to leave to go to Seaworld quickly, but we became friends and I left behind some signs telling them that I would be happy to let them into my server. So, for three days, I have some friends besides my sister.