You giving her salt/mineral too? What body condition is she in, like does she look thin or fat or normal? I.e., are her ribs sticking out or do you have to apply pressure to feel them?
Right now she looks pretty normal except of course the big baby bump on the right side. Today she looked a little hippy and we could see a couple ribs (at least this morning) by afternoon she looked good. She has about 4 weeks to go before she calves. And yes she has salt/minerals available.
...foot
I'd keep feeding her what you're already feeding her, it sounds like she's in excellent condition as it is right now. When she starts lactating (after calving), then you might want to introduce a little grain or a protein tub/block or something with a little more calcium to help keep her in condition and with milk production. Otherwise, she's just fine with what you're giving her now.