My own horse's health is being compromised by the wrong sort of hay (long story for another day) - a situation I hope to correct very soon. But if you just took how she looked and performs overall you might never think there was any issue. (see first photo)
In the second photo you may be able to see the subtle deviation from the healing angle?
But when I mark it up, it is not so insignificant.
The hoof is providing several other clues that all is not 100%:-
Rather flat sole
Stretched white line (at toe)
Still footy over stones
If she had shoes on I probably wouldn't have noticed any of these things and Grace could have continued suffering LGL for years until she had a major lami episode.
While we might be struggling (very hard to get the right sort of hay at the moment) at least we are aware that Grace's health is not as good as it could be and can take steps to ameliorate it.