"makes you wonder if perhaps this woman found Cait to be just as charming in person as she found Sam to be and decided to follow both?" That was my guess too, and even more interesting is that her friend who took the photo (who wasn't the original OL fan of the two) ALSO followed Cait after that chance meeting - but not Sam or OL as the 1st girl did. Guess Cait left the bigger impression on her? So interesting!
That certainly is interesting!