I think it’s possible Roy Moore signed that yearbook as “Roy” and the girl added the rest. I’ve done things like that myself to document something more accurately for posterity. If so, that does not necessarily make the part Roy signed a forgery.
If the additions were done 40 years ago no big deal. If the additions were made over the last few months then that raises flags about the whole thing. The key thing is to understand WHEN the additions were made.
I just don’t understand why someone would have a yearbook out for signing at a restaurant in December. Did they give out the yearbooks a year in advance or something?
It might be possible that the girl added the extra words but how likely would it be that she misspelled the name of her employer? Apparently the restaurant has always been Old not Olde.