Lola
I'm sure you've read all about Scabby Mouth, but this data sheet gives some useful info.
https://www.agric.wa.gov.au/li...
It seems weird you have it now, when it's normally a summer disease and often in relation to dry conditions, feed etc. Did the ewe get it via foot root or excessive wet ground conditions?
This maybe why she is lame? I would carry on with getting her mobile and walking. Sheep will also eat fruit like apples etc, which may give her a sugar boost to get going.
