Basil's Links
Basil adores Rio, and feels responsible for him. Basil is disappointed in Rio but not for wanting a better life, after all, they wanted that too - but rather that Rio doesn't feel comfortable enough to come Basil when he needs help. Yeah, they are aware of Rio's want for a life outside of the Silver Hand and offers him slack on his journey to discover himself, much to irritation of Crow.
Basil is Rio's guardian, his dad, his mom, his slightly distant uncle all rolled up in one. Rio admires Basil but can't quite abide by the Silver Hand lifestyle - wanting more in his life, he just doesn't know what yet. He's scared to bring it up to Basil however, fully aware of the sacrifices they made for Rio.