Nancy
Sarah may very well be in cronic rebound due to too much insulin. That 49 on the 6th should have earned her a dose reduction to .75u not a raise to 1.5u.
Anytime a newly dxed (under a year on insulin) has a reading anywhere in the cycle below 50 they earn an immediate reduction by .25u
And I can't stress enough how much you need to get some midcycle tests. Preshots alone tell you nothing about how the dose is working.
Mel and The Fur Gang