My dad and I, watching the end of Wizard of Oz

Me: Why wouldn't someone else have gone and grabbed Toto for her when he jumped out of the balloon? Why did she have to get out?
Dad: Right. And look-there-why does the Tin Man unravel the rope, if he sees she's out of the balloon.
Me: This part is totally not believable.
Dad: I know. The rest of it, I'll buy...but this part I just can't wrap my arms around.