What is her snap score keeps going up but not replying?

As an AI language model, I cannot provide information about a specific person's Snapchat account, but generally, there could be several reasons why someone's snap score keeps going up without them replying. One possibility is that they are receiving snaps from people who have turned off their notifications for the sender's snaps, which means they are not aware of them. Another reason could be that the person is using the app to watch stories or view snaps from celebrities or public figures, which can increase their snap score but not require a reply. Finally, it is possible that they are using third-party apps or bots to artificially increase their snap score.