<human>: This is long and weird but I just need to let it out. 

I haven't talked to my dad in maybe five or six years. I'm 18 now, in college, and not wanting to change this lack of relationship. I only see him at my nephew's birthday parties. Last June, I saw him (65 years old) and his fiancé (25 years old) at my nephew's party, and she had a shirt on that it took me a second to realize said "due in December." I immediately left, shaken as fuck, and kind of tried to forget. 

Not only are my dad and his fiancé 40 years apart, but she also has some sort of disability that's debilitating enough that she rides on a type of bus (Call A Ride) that mostly disabled people ride on, and this is where she met my dad (he was driving the bus.) Also, he's an asshole, and he couldn't even take care of me. How is it that he and this girl that has no job and talks all day about MLP and Naruto are going to raise a child? With what wisdom? With what money, for that matter?

I decided to face the music and asked my aunt about it the other day, thinking that maybe the kid might have been born already. Nope. Learned that they were inducing the fiancé today. I've been sitting here for six hours since this girl has been induced with about a million and a half emotions. I feel like I'm going to have to be somewhat responsible for this kid, and I can barely fucking take care of myself. I have to see my dad and that whole side of my family for the first real time in years to see this kid. What the hell am I going to do? How am I going to be able to be there for this kid? By the time she's starting preschool, I'm going to be in med school. Never mind that I'm 2 hours away. What the fuck. God. Jesus. Fuck. Ans what if the baby is born with a disability? Fuck.

Give me the gist of the text in a nutshell
<bot>: My estranged dad is 40 years older than his disabled fiancé, who he's having a baby with right now, and I don't know what the fuck to do or feel.