Hi hun, I still think you should keep a log for a week it might ease your mind. Also keep a list of foods on the fridge you know she'll eat and pick from them to change up the menu and not feed her the same thing. Alos, she's only 12M she's just getting the hang of this. Take a deep breath. She's only now discovering tastes, textures and things other than milk. It will take time it's not going to happen over night.
Another thing you can try is do dinner for breakfast, lunch for dinner, breakfast for dinner. You don't need to stick with a traditional "menu".. Like I said before my lo will not eat what we eat we offer a little of what we are eating on his plate with his food and if he tries it great, we try and get him to try it but if he doesn't eat it that's ok. We don't push. Mealtime should be fun.
One thing I noticed at this age is I would swap your meals. There is no need at this age to give milk first. My LO will not eat breakfast till he's been up for 30-45m so we get him up play in his room, get dressed, brush teeth etc. Then we go downstairs and he helps me make breakfast. He sees what i'm making. What time does she wake in the morning? If it's like 6:30 you could do
W: 6:30
E: 7 Breakfast with a cup of milk. If she only wants bottle (I saw another post of yours) you could offer at say 8/8:30 Remember her oz's of milk are really reduced at this age. I think at 12M The recommendation at 1 year is no less than 12 ozs and no more than 20ozs per day - inclusive of milk used in food, yogurt, cheese etc.
E: 8:30 bottle .
Make sure your meals are spaced at least 2-3hrs apart. Mine are more like 3-4hrs as my lo wont eat unless he's really hungry. So for him he doesnt' get a snack between lunch and dinner as it's only 4hrs apart. He does get some milk to drink between the two but only 4oz.
I differ from most moms here in the fact that if she refuses something not to give her something else I don't necessarily agree with that. I think at 12M her tastes are changing so often that I personally would offer her a second choice because one day she may like something the next she doesn't and she can't verbalize that. So if you offer her something you know she likes and something she may not like and she refuses both I would offer one more choice (healthy though) and if she refuses that then that's it. I don't keep offering until she eats. At 19M though I don't do that anymore. He gets what he gets and that's it. However, I do take into consideration if he's teething, doesn't feel well, didn't sleep well etc. adn I give a little leeway there.