How do I move apps from my phone to tablet?
Your Galaxy S5 Active should be able to create a Wi-Fi network, and share its own cellular data.  This is usually referred to as "tethering", or "mobile hotspot".  The settings are different for various Android devices, and sometimes are a paid feature (or may be missing completely) depending on the carrier.

Generally, on Samsung devices like your S5 Active you can find it under Settings -> Connections -> Tethering &amp; Wi-Fi hotspot.  You can activate and configure it there, and then use your daughter's tablet to connect to the newly created Wi-Fi and access Google Play Store, or other app stores (like Amazon, for example.)  Here is a video that shows how to find the settings.