That's All She Wrote Meaning

(idiomatic, US) Indicating an abrupt termination of a project, or of one’s hopes or plans.

Example: 1951, Jackie Brenston, “My Real Gone Rocket” (song):
  If you see a long yellow streak of all fine smoke / That’s my rocket pulling out, that’s all she wrote / […]
1951, Hank Williams, “Dear John” (song):
  There was a note upon my door... I won’t be back no more / That’s all she wrote, “Dear John”.
1963, Johnny Cash, “Jackson” (song):
  […] Goodbye — that’s all she wrote.
1980, Bruce Springsteen, “The River” (song):
  Then I got Mary pregnant and man that was all she wrote.
  And for my nineteenth birthday I got a union card and a wedding coat
1987, Deep Purple, “Black And White” (song):
  Inside information taken down note by note / A silent footstep that’s all she wrote.
1990, Firehouse, “All She Wrote” (song):
  Bye bye, baby, bye-bye, she said in a letter. And that was all she wrote.
2004, Gaither Vocal Band, “I Catch ’Em, God Cleans ’Em” (song):
  He said a prayer, and that was all she wrote.
2004, Michael Graves, A+ Guide to PC Hardware Maintenance & Repair (page 525)
  I get five short beeps when the machine starts to boot, and then that's all she wrote […]