I was sure she was going to come back positive but these results are negative.
I have to get to bed,but just wanted to say that ,if my calcs are correct,her ratio is 4.47 (4.5 rounded off)which makes her compensated IR. Or just under the 'line'.
Tightening up her diet as much as possible may be part of the answer.Even a tiny bit of grass may be,as you already suspect,just too much for her.
