LA200 won't do her any harm but I still would talk to a vet before getting into too much self-diagnosing of drugs. I would think that due to some of her issues, he might go with something like Draxxin. Vet prescribed.... it is more powerful than LA200. It will cover a few more things and does work well on pinkeye/ other eye issues also. Also, if she is drinking the 2 pts per feeding 3x a day, for the next several days or so, and the weather is getting colder, up her to 3 pts per feeding so she has a little left in her tummy when the next feeding comes around. At least at the night feeding so she has a WARM FULL tummy to help her through the night.
Sadly, yes some cows will just drop their calf and not care, but there aren't too many of them. And practically every poster on here will send a cow like that to have a Big Mac Attack. But it seems that sometimes, some instinct will push a cow to abandon a calf that they feel isn't "right".