Oooh totally new to this and I haven't read your book yet (i might have to ><), but you coulddd make Biana find Tam and Glimmer together in a little secret garden or something? Maybeee, maybe Glimmer is not doing well and Biana notices and she helps her and they... °•Communicate•° ? And after the conversation, either Glimmer realizes she's not comfortable with Tam anymore, or Biana realizes that she actually doesn't like Tam in that way. Or they both get together in the end! Oops, idk how lgpt this story is? Sorry