When my husband was first diagnosed with Type 2 diabetes, I would ask him his "numbers" every time he tested himself. I quickly realized that this was stressing him out in a situation that was already very stressful because my reaction often reinforced his anxiety. Now, I never ask. I let him tell me, and he does. As a result, we are both more relaxed about his health. (His A1C was 6.1 last time it was checked. He's doing great!)
When he was diagnosed with diabetes, his A1C was over 13 so his A1C reassures us both that he's truly taking care of himself.