Hi Eva,
I agree her night does look quite short, I've tended to use the rule of thumb that it should be at least 10.5-11h, although I know some LOs have different natural patterns. How is she during the day? Does she seem well rested in the morning or more tired than usual? When she wakes earlier than you'd like, does she then come into bed with you and go back to sleep/doze, or is she wanting to play? Do you still get up at 7am even when she wakes earlier? Just asking because that A time before the first nap wouldn't be 'worth' the same if the first hour or so was dozing in your bed, as opposed to being fully up and about.
Looking at your routine, I'd suggest trying to cap that morning nap further, perhaps try waking her after 20mins. Then she'll be more tired for her afternoon nap and hopefully have an easier time settling for it. You may also find that you need to reduce the A time before it as she'll be more tired. That could in turn help to shorten the day. I wouldn't worry about getting exactly a 12h day and night, especially since you're in the 2-1 nap transition, it's quite common for nights to get shorter until that morning nap disappears completely.
Btw this is what happened with my DS, we capped his morning nap at 20mins and towards the end of the transition he'd refuse it on and off, by the time he was doing 5h before BT we knew he could theoretically manage the 1 nap routine so we just stopped offering the morning nap - actually many LOs get to one nap on 4.5h A, especially if it's a long one, and since this is what your DD is already doing, she may not be far off. But I'd say hold onto two naps as long as it's working, since the transition can be a little less bumpy that way, and it sounds like the longer days work better for your family. Oh and some LOs even end up doing 5-10min CNs towards the end of the transition, keeps the day shorter.