How to make friend for custom character

[Hurl]

Ok, I want a friend or a pet kinda like Abigail for my character. But I don't know how to. Can someone tell me what codes to make a friend to put in and where to put it. Also, can I change the texture of the pet/friend? If so, how? 

[alainmcd]

Abigal uses this code in her constructor function:

    inst:AddComponent("follower")
	local player = GetPlayer()
	if player and player.components.leader then
		player.components.leader:AddFollower(inst)
	end