Destiny I think her name is, isn't related to them
Viewing post in West Woods: Over Borders comments
I don't think that she's Destiny. From what we get from Crystalblaze, Destiny was her sister, and they were both part of BrambleClan so I doubt that she'd forget anything about how much clan cats eat, and she said that the gray and brownish red cat was her brother and Destiny and Crystalblaze don't have a brother.