My DC never liked cow's milk as babies/toddlers. I breastfed them until they were just under 24 months, but by 16/18 months they weren't breastfeeding very much, just before sleeping really, and I obviously have no idea how much they were taking.
12oz is just over half a pint isn't it? Milk on cereal, cheese sauce, parsley sauce, and other sources of calcium as mentioned above should easily cover it.
You don't need to buy yoghurts with added vitamins. Just buy good quality full fat natural yoghurt (like Yeo Valley) and add a some fruit/honey if you want to. My DC always liked plain yoghurt as a side/dip with savoury food like curries, rice, pittas etc. too.
Are you letting DD drink milk from her own cup rather than offering a bottle? A new special cup might help, and a pinch of cinnamon in warm milk at bedtime can be appealing. You could also try plant milks and see if she prefers them to cow's milk.
Anyway. In brief, as long as she's eating reasonably well, getting enough fluids and thriving I really wouldn't worry. If you really want her to have milk, just continue to offer a small amount in a nice 'big girl' cup a couple of times a day and she might go back to it.