Would it make sense to setup another instance of the app and then you can send the notification to a different notification device? I think you can setup multiple pushover "devices" if I am not mistaken.
Otherwise, would it work if you pushed the notification to a virtual notification device (that stores it as an attribute)? Then you could grab the attribute from RM.
Here is a link to the Virtual Notification driver I have used before: Getting more out of notifications - #2 by thebearmay