As Sienne said in a previous post, the different amounts of dosing is giving you wonky #s. The doses need to be consistent in order for Martha to respond better. You can't be giving 1u at 1 cycle, and then nothing the next, and then 0.25u the next and so forth. Lantus works best if it's consistently given.
Also, if you're finding that 1.25u is too much, and yet 0.25u isn't quite enough, try shaving the 1.25u to a skinny 1.25, or even try a fat 1.0u (a fat 1.0u is just a hair below the 1u line, which I think results in an extra small drop, or something). That may work best for Martha, and if you're consistently giving that amount each and every cycle, you may find that she'll respond better, and perhaps flatten out. Try and be as consistent with dosing as much as possible, please. And try and get more mid cycle tests, too, so that everyone on here can see how she's doing, and can advise if they see something amiss.
With regards to Martha running away, try a simple trick... If she's on a feeding schedule, and if you don't have any low carb treats available, try brushing her as a treat instead. She'll quickly learn that the testing isn't a bad thing and she'll be rewarded afterwards with being brushed.
Good luck!