I agree that it’s odd and the State could have brought everything up for full disclosure.The first video was more upsetting. This one not so much. You're good to watch.
In the first interview posted (the telephone one) she did contradict Luis saying he was in the house when KM and SG were there. She says he came after they left; I think it is just a memory issue.
I still don't understand why she was not called. The contradiction and the fact she looked up information on the case after the probable cause document was released? Most people would. She did provide a lot of insight to how KM's attitude changed in distancing herself in their friendship. Maybe there are calls between her and LR with him reminding her of events?
In the case I was involved in there were witnesses that one ADA thought were important and were subpoenaed but another ADA, who ultimately brought the case to trial, thought weren’t and a full conviction was not secured and IMO the witnesses testimony would have only helped.
Just speculating that maybe the State felt they could secure a conviction without her testimony or of course, as you mentioned, her credibility could be called into question.
Trials are such an iffy situation!! Wouldn’t want to be the one making calls regarding them yet at times you really question choices made!