If Maisie is having hypos every day and they are harder to treat, it woo,d suggest to me that her insulin needs have changed slightly.
One of the most challenging aspects of diabetes for me Ofer the years has been the ever-shifting goalposts. We are forever playing catch-up... just when you’ve got your basal, meal ratios and correction factors working well for a week or so, things change and you have to start tweaking and adjusting again.
I generally find small adjustments are usually enough, maybe 10% reduction in basal, then see how that goes and look at meal ratios etc next.
But you should check this with your clinic or DSN really, for their advice.