Even is she is not an expert in DNA - she should be prepared to cross the experts. She should be able to take direction from first-chair (Derstine) and given that the experts are scheduled and technology exists - it should be entirely possible and acceptable for her to reach Derstine by way of instant messaging. Obviously, this is not the defence's first choice, and I certainly don't blame them for that, but if the illness continues, I am sure the court can find a resolution so that the trial may move forward.
All of this is my OPINION only. I do not know how the system works in Canada. But it appears it is similar to the US and this is a very important trial. My understanding of having a backup defence lawyer is so that issues such as illness or death, do not result in having to start over at the beginning. There is not just the trial to consider, but the enormous cost and its impact on budgets, etc.
Salem