If I was a juror, I would certainly suspect that to be the case.
To me, this part sounds like an outright lie:
Dusek: "Do you remember any "further contact" that night?"
BVD: "I can't remember, its been a long time, I've been through a lot. "
I think there is something more there. I'm not sure what that is, but I don't believe Brenda for a heartbeat.
BVD: "I can't remember, its been a long time, I've been through a lot. "
If her daughter had disappeared that night, and she had no idea what had happened to her, BvD would've re-lived (thought about) every minute of that evening a thousand times. "I can't remember" doesn't pass the sniff test.