So, Dad gets orders to leave Germany for Walter Reed, and these orders are included in a scrapbook Mom kept. However, I don't see anything that she wrote about the move herself.
Mom's scrapbook does, however, have three pages of photographs of us packing up to leave. This includes some stoop watching with neighbors from the entrance to 9B (our apartment was 9B1).
Research notes:
The 75th Station Hospital mentioned in the orders is the hospital in Bad Cannstatt.