I can understand sometimes when an rp dies and no one says something. There are moments when it's so obvious that the rp needs to die because no one can get anything to happen. Sometimes I just leave in those moments without saying anything but I find it really strange when people disappear right in the midst of interesting things.

I don't know if I have seen any of your rps, but present tense is "she goes to the store". past tense is "she went to the store." Neither way is more right than the other, but many writers use past tense.