[Script] Teleport - Ranger with a pet teleports cross-page

This is not a bug with teleport. This is a weird situation that occurs when a player is controlling two characters that must use a cross-page teleport. One of my players plays a Ranger. Her Ranger has a panther, that she also controls. When her Ranger cross-page teleports, she is also taken to the destination page. However, her panther remains back on the original page, and she (the player) cannot access that page in order to also move her panther through the portal. I, the GM, must manually teleport her panther for her. Any suggestions on how I could implement teleport so that the player with the Ranger and the panther could teleport both characters without GM intervention?

Until someone comes along with a suggestion regarding Teleport, I would simply have the player drag the Panther out of the Journal tab to their current location. 

When I have a player with their familiar in the game, I have them piggyback the tokens and select both before entering the teleport square.  Both tokens appear on the destination page (assuming that both are already on the GM layer of that page before the teleport.

Great suggestions! Thank you.