Faith seems stable now and didn't have any incidents through the night.
Dr. George came last night and took two blood samples: one to test for EPM and the other to check her Selenium/Vitamin E levels. He also gave her a shot of Selenium and Vitamin E as he is concered her levels are probably low and that may be causing her weakness and collapsing episodes.
If the S&E levels come back low, we can easily fix and monitor it, so we're hoping it's that.
If her EPM comes back positive, then we will need to do a spinal tap to determine if it has caused neurological damage. Unfortunately a "positive" blood test means that the horse was exposed to the protazoa, but does not show if it has attacked the CNS. A spinal tap is the only way to know for sure. Pray for negative.
We should have the results back in 5 days or so...