Good stuff!
Still, something to be aware of. I hope she did not bring anything into your flock?
It's tempting to allow strays to remain with your sheep. If no one misses them then you have won one; makes a change from losing one,
but it really isn't worth it.
Keeping a closed flock should be your gameplan. It is the only way to stay ahead and stay profitable with so many diseases and bugs out there.
If it happens again get the stray out straight away and isolate it, charge the owner when they collect it for feed and hassle, that would be my advice.
People whos sheep graze 'long acre',
by definition aren't always the best at maintaining flock health.