Was Mindy's last song a suicide note?

Here's the video for last song Mindy McCready and her producer boyfriend David Wilson worked on together before their deaths. The video for the song "I'll See You Yesterday" shows pictures of the couple followed by information on suicide prevention. The clip was created by her friend David Hanks who asked her if he could post it, but Mindy told him he'd know when the time was right. Hanks tells People, "In hindsight she was having me produce her suicide video." Her ex-boyfriend says he isn't surprised by her suicide and is trying to get custody of their son. McCready can also be heard telling investigators in her last recorded phone conversation before her death recalling what it was like finding Wilson moments after he allegedly shot himself. A tribute concert is being planned to honor McCready and her life. See the video below: