In my completely non-expert opinion I agree with @Kite_Rider , she looks to be loading the RF more to me. But the fact that she looks more uncomfortable than the amount of lameness she's showing on LF makes me wonder if she is indeed uncomfortable in more than one leg/foot, especially as you've mentioned before how stoic she is. What's she like on a circle? I think your plan of removing the new hay and then reassessing is a good one. She is such a sensitive soul isn't she?