Insanity Gaming thank you! I was thinking the same thing. Every RU-vidr who posts GTA V is fucking click bait trash, all their videos or 10 minutes long just so they can have ads in them to get as much money as they can out of every video.
This only appears when Michael returns to North Yankton. If you call Amandy during the time driving to Ludendorff as Michael, this will play. I'm pretty sure it lasts for a few-ish missions.
During ending B (the ending that you kill Michael) she sends an email to Frank reading something along the lines of: "Rot in hell. I know you had something to do with the death of my husband and if i ever see you again i will rip your head clean off your shoulders". Edit: just found the full email, this is what it says: "Rot in hell I know you had something to do with the death of my husband. If I ever see you again, so help me god, I will rip your head clean off your shoulders. I suggest you stay a long way from me and my family. I hope you rot in hell. -Amanda"
Creepy thing: I watched this video, and watched another 10 minute video. I didn't even pay much attention to the number and somehow I remembered the entire number.