On second thoughts, about Becky the Prosecutor, I think allowing the defendant to interrupt her can also be a good thing. One the one hand, the jury does not get the full benefit of the question, but on the other hand, allowing the witness to answer the question that she thinks is being asked is also an interesting way of finding out what the defendant wants to say. It seems a bit like voluntary declarations, which can be revealing in themselves. The prosecutor can always come back and ask the rest of the question a second time later.
I'm watching the testimony from the sister. They sure don't look alike and Amanda wearing her clothes suggests to me that she was wearing her own clothes underneath her sister's clothes. Did Amanda lose her shoes that night? ... or was she wearing her sisters' shoes? Her shoe was broken so she needed new shoes? What the theory on the shoes?
The sister seems sad about the whole situation, and it does appear that she wants to do the same thing. The fact that she did not come forward sooner can be understood. She said that she's not good with numbers so she can't say how old her 21 year old son was four years ago, or was it two years ago. It also sounds like she moved away from that home, and the prosecutor asked about the name of her husband at the time. I think this had a huge impact on her life. She made the wrong decision in not notifying police immediately upon learning that her sister was involved in a murder, but she does repeatedly say that she wanted to believe that Laura wasn't dead. She has similar phrases to Amanda, and she interrupts a bit too, so I think they must get it from their mother. What do we know about her other than that she passed away shortly before the murder and she left Amanda with nothing. How did she die? Amanda certainly benefited from her husband's murder, and now she was looking to benefit from Laura's murder.