Personality differences are apparent on Strava. Mimi keeps to herself and only follows a handful or people. She gets a lot of thumbs ups and a few comments with each run segment. She does not post photos of points during her run.
Sandy seems much more outgoing. She follows a lot of people and one even thanked for offering words of encouragement to her after her daily run was finished. She gets more thumbs ups and a lot more comments. She posts several photos for each run.
Nothing wrong with being different but Sandy is building a loyal following of random people. Mimi seems to have a loyal already but Strava does not indicate that. The social media seems to be at the URC webpage which is run by her loyal friends.