Is she interested or not?

Im a girl and I tend to leave a guy on 'seen'. It usually is because there is not a question that I need to answer to. Even though the conversation was really good I like to leave the conversation at that so it leaves it at a good note not a dragged out long conversation. She could be trying to keep you on your feet and does not want to appear more available. However, it if it becomes a pattern where she leaves it on 'seen' or takes a while to reply in between messages there is a chance she may be losing interest or have something else going on in her life. If you want to continue having good conversations message her at 8pm at night mon-thurs. This means that generally she should be finished dinner or finishing dinner and could be just watchin TV. It also means its not too late to have a conversation for an hour and a bit. If the conversation dies at least you can make up that you are going to bed. I hope this helps :))