Hi and welcome from Texas! I'm in the Houston/Galveston area. Way too wet right now! Glad you're here and hope to hear more about your upcoming adventures!
The first thing I'd do would be to take that baby's temperature. If she has a temp, and I hope she doesn't, you might want to consider getting a vet involved. With her muscle weakness I'd go ahead and give her a bit of selenium. You can get a Selenium and Vit E gel from most farm/feed supply...
You remind me of my son. Barely got that boy through high school. He hated math and refused to do it. Now he's an electrician and a site supervisor with crews at 5 different plant locations. He does computations in his head. Scary smart - and you sound just like him!