Dakota or Brielle?

Chantal
Goes with the surname Trinka, and her big sister's name is Blaer Noelle. Is That too matchy with Brielle? Does the middle name Noelle for my eldest make Brielle an awkward first name for my youngest? Her nickname would be Bree. Is Dakota too masculine sounding? Help! Other names we've considered: 
Shiloh
Kelsey
Autumn
Fawn
Shay
Vivian
Only 25 days until my due date so I'm starting to sweat it. 

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