That could be on the back, or maybe nobody had Bates stickers with them. I do see it is marked "Exhibit B", implying that it came up in some sort of proceeding, likely a deposition, but could have been taking of a statement.
-- Are we to believe that the prosecution became aware of it after DeeDee's aborted video deposition but just before Sybrina's two days later. --
I think either the state had it from early interviews with Sybrina, or the state had it the day Sybrina was deposed by O'Mara. The state could have been aware of it before then, and consciously avoided taking it into state's evidence.
-- I'm not buying that it was given to Sybrina on March 19th prior to the Crump interview. --
Then it is Sybrina's fabrication, repeated by Bernardo as a truth. Although, thinking on, by now it could be a shared story between Sybrina and Witness 8.
-- It looks to me as if it could be a cheat sheet scribbled by Witness 8 as a memory aide for her deposition and the date added later. --
I think it is in the nature of a cheat sheet too, maybe just a memory aid preparing for her first telephone interview with Crump, then she haded the cheatsheet to Sybrina, who headed to Crump's place to meet with him and the press. The "Thank you" closing looks like something she is reminding herself to say.
Why would she give her cheat sheet away before the big test aka interview???
The purpose of a cheat sheet is to have it in front of you to help with the answers to questions or in telling your story. Thus why give it away prior to putting it to use.
What I do see is Witness 8 scribbling these words on paper to have in front of her or to review before her April 2012 interview or even her March 2013 deposition, and then afterwards Sybrina grabbing the scribbled note that is clearly in Witness 8's handwriting and predating it to make it appear as if it had been written by Witness 8 on March 19, 2012.