Briar is gorgeous, feels unique and complex. Also sort of cutesy to me, like
Princess Aurora's pseudonym "
Briar Rose" in Disney.
Both
Birdie and Bleu don't feel feminine to me for some reason. When I think
Birdie, I think Badminton. When I think Bleu, I think of breadcrumbed meat wrapping more meat wrapping cheese. Though I guess I like both Badminton and Cordon Bleu, so I'll let them slide.
Matching first initial names always feel gimmicky though, and I personally don't like the B sound for names in general. This should be a last resort for any mother.
figmenty pigmenty crosser-tosser