No, I don’t really think the jury will think she was riding her bike mothers day morning. To much evidence that she was incapacitated before that (going silent on social media, phone turned off, truck data, BM phone data, etc)
However I think the DA using things like BH saying SM would ‘never’ ride up that way and she would ‘always’ drive to the trail, bring her phone and camel back. Weakens the prosecution case because it gives a spot for the defense to introduce reasonable doubt. If the defense pokes to many holes in the prosecution evidence, it will make the jury question other parts of the evidence.
As does, IMO, using a bike mechanic as a bike crash experts saying because of the front wheel position means the bike was staged. Just have the cops testify and show photo/video evidence about lack of disturbed ground anywhere in the path of the crash, which you would expect if there was a crash.
IMO The AA and PH had a lot of damning evidence and a lot of questionable evidence. IMO you don’t give attorneys as good as BM’s any avenues of attack if you don’t have to. Why use questionable evidence instead of sticking to the evidence that is way less questionable and overwhelming proof of guilt?