What she said she used was mini bridge and if it is included how can we install it?
I believe that Bridge comes with all CC applications. For the min-Bridge app in Photoshop, open Photoshop and select Windows > Extensions > Mini Bridge.
Bridge used to be bundled with Photoshop and got installed with it.
Now with Creative Cloud, Bridge is a separate but free download and install. You will see in the CC app list.
Minibridge is built into Photoshop CC, but needs Bridge CC running in order to work.