I forgot that in your PM to me, you also asked if lowering her dose would keep her from going into green at night.
The depot from a dose can affect six subsequent cycles. While it’s most likely four, it can extend further once you reduce the dose. If you lower her dose to 1.25u before she earns a reduction, her BG will go higher once the depot has adjusted. That means you might see higher bounce numbers and definitely higher nadirs.