WaitForChild not working?

Okay, so pretty much...I have 2 scripts...

local girl = game.Workspace.Girl1
local Sound = script.Sound:WaitForChild()
script.Parent.Touched:connect(function()
    Sound:Play()
    girl.Arm2.Transparency = 0
    girl.Arm1.Transparency = 0
    girl.Head.Transparency = 0
    girl.Dress.Transparency = 0
    girl.Shoe1.Transparency = 0
    girl.Shoe2.Transparency = 0
    girl.Leg1.Transparency = 0
    girl.Leg2.Transparency = 0
    girl.Hair.Transparency = 0
    girl.Head.Decal.Transparency = 0
    wait(5)
    girl.Arm2.Transparency = 1
    girl.Arm1.Transparency = 1
    girl.Head.Transparency = 1
    girl.Dress.Transparency = 1
    girl.Shoe1.Transparency = 1
    girl.Shoe2.Transparency = 1
    girl.Leg1.Transparency = 1
    girl.Leg2.Transparency = 1
    girl.Hair.Transparency = 1
    girl.Head.Decal.Transparency = 1
    print("Jumpscare1 Part 1 of 2 success!")
script.Disabled = true
end)

and

local image = game.StarterGui.Jumpscare1.Image:WaitForChild()
local Sound2 = script.Sound2:WaitForChild()
local Sound3 = script.Sound3:WaitForChild()
local Sound4 = script.Sound4:WaitForChild()
script.Parent.Touched:connect(function()
wait(2)
    image.Visible = true
    script.Sound2:Play()
    wait(3)
    image.Visible = false
    Sound2:Stop()
    Sound3:Play()
    Sound4:Play()
    wait(10)
    Sound3:Stop()
    Sound4:Stop()
print("Jumpscare1 Part 2 of 2 success!")
script.Disabled = true
end)

Its for my halloween project, and for some reason WaitForChild never seems to pick up that the objects are there, so then it just waits for ever. The only error i'm getting in the output is "Argument 1 missing or nil" but its not missing OR nil...I'm really confused. I think you can tell what the scripts doing, but pretty much, a girl pops up behind the player, it plays a sound, then a few seconds pass and its gone again. That script is then disabled to prevent repeats... Then the second one triggers a jumpscare, sound, and then breathing and heartbeat noises. It is disabled as well.