Is AUTHOR wrong in the post ? POST : TL;DR at bottom

Please excuse all the grammatical errors as I am on mobile.
So I was never close with a lot of people on my mothers side of the family but my grandpa recently died and as I just said I wasn’t close to him so I didn’t go visit him at the hospital, I didn’t go see him often when he was alive, I honestly never actually cared about him so when I found out that he passed away it didn’t faze me at all. When some of my cousins asked me why I didn’t show up to the Hospital to visit him I told them that I knew he was in the hospital but it was the weekend and I was working. Then I said I was going to go visit him after the weekend was over( he passed away Friday night but I wasn’t going to go to begin with) but I simply lied because I dont want them saying stuff like you’re effed up etc etc. (They bought it. Anyways, Just a few minutes ago my mom called me to tell me to show up to the funeral and I said sure I’ll go and then she said to take my camera and record it and I said sure no problem. And I was actually going to do it for free because all my family will be there but then she said how much would you like to get paid for it and I said “oh you’re paying me? Uhh just give me 100 no big deal” and then my mom said “100?.... ummm okay.. I’ll see what they say..” 
then I said alright and we said our byes and clicked.
AITA for charging the $100?

TL;DR: grandpa died and my mom called me to go to the funeral and record it. I said OK planning to do it for free but then she said how much would I charge for it so I said $100 and she sounded taken aback by it. 