I agree with Kristen. If she doesn't run into any issue by not eating, then she should be fine.
Peanut gets really bad low sugar if he doesn't eat. The problem was with him he would never eat just kibble in the morning so I would have to mix something in his food.. then I started bringing Weruva wet food in the mix and now I have no issues!! For me if I was going to mix in wet food, I wanted the best brand. Weruva is great, looks like home cooked meals!
Now I mix a little with his breakfast and dinner!!
He isn't picky because of it. He will always just eat his kibble.
It really worked out for me having the wet food, he just had to get 3 teeth pulled and I had to feed him only wet for a week! I was really scared he wasn't going to eat his dry after that, but he's fine!!
Maybe you can find her a little snack for the morning if you feel she needs to eat. You can always give her a baked sweet potato, small amount of yogurt, pumpkin.. something yummy and healthy!!
You can also boil her a chicken breast and give her a small little snack out of that. I think it's good to have something in their tummy