Need help with ripping BL2 models.

Hey there, I’m trying to get Lilith’s model for use in GMod. This is my first time doing anything like this and i’m completely lost… I’ve unpacked the UPK containing lilith’s texture(IceCanyon_Combat.upk) and there’s a lot there regarding her. How do I get the actual model for her?

EDIT:

I actually need help with everything… How do I make a BL2 model be used as playermodel or NPC in GMod…?