Update - June 26 - Day 52

Well ... the news today was not good. The full test report of Barb's most recent bone marrow biopsy shows some Leukemia cells, which means that her Chemo treatment did not kill all of them.
Therefore, before she can start her stem cell transplant process, she will need another round of Chemo to eliminate the Leukemia cells. The "pre-transplant" Chemo process is more intended to suppress her immune response to donor stem cells rather than to kill Leukemia cells. So, she now faces 2 more rounds of Chemo before the stem cell transplant process can begin.

Naturally, this news is very discouraging, but we're staying positive.