I understand your feeling about MM, but I take another approach angle. Her statement about hearing it on the news is import, because she is fairly detailed about the series of events that occurred immediately after.
From MM's statement, I take this sequence of events happening all within minutes
1) saw DM's arrest on the news
2) she asked MS why his friend was being arrested for that crime
3) MS panicked, grabbed the phone and called AM to get the drugs out of the house. We know that to be 9:20 p.m. on the 10th.
So for me, it is important that she saw it on the news or some other source that would explain the immediate post series of events she claims. Otherwise, what else is she not remembering correctly? For most of these minions, it has been minimizing their involvement that their testimony has been less for than forthright. LW_2 is a total different story.
SS, AM, MH, and even JV have all provided damaging statements of DM, They just seem to be very dumb when it comes to their knowledge or common sense of their involvement. MM is coming across as the only adult of the bunch, and credibility of her recollection is important.
I like to shore up the known evidence before speculating on something probable based on no evidence, or evidence that we're not even sure is correct at this point in the trial. We have tracked the news of DM's arrest to being released May 11th around 11:00 am, but that doesn't mean it didn't happen. It would please me to have a sleuther find evidence that she heard it on the news. That would be a BAZINGA!!
MOO