Cream was, canonically, the first friend Blaze ever had. She met her before she met anyone else, and though Sonic would be the one to drive it home later on, Cream was the one who had initially taught Blaze about the values of friendship. Blaze also accepted Cream's friendship before she accepted anyone else's. As for Silver, his relationship with Blaze is almost nonexistent since the ending of Sonic 2006. The Mario and Sonic series and the DS version of Sonic Colors do not count as they are not considered part of the main canon.