Ronnie means to check +1 and +2 so you can PREVENT the tank (you can feed HC food preemptively if she is dropping early, before she gets to the 30's.).
Have you thought any more about ways to measure the less than 0.1 dose consistently to see if that will work better for her? If you think about it, at a dose that tiny varying by even a drop can be considered dose-hopping, which with Lantus tends to lead to higher numbers. If you're giving a dose of one drop, then the next day you give two drops, that's doubling the dose. Just a thought, because I see lots of question marks on your spreadsheet as though you're not quite sure exactly what you gave.