Vesper - I really like this and wouldn’t think twice if a friend named her baby this
Zephyr (Zephie/ Zeph) - too many “a little wind” jokes. Zephy/Zeffy/Zeffi could be a stand-alone name, sounds like a diminutive of Josephine.
Frieda - I find it a bit boring I’m afraid but it’s fine
Ottoline / Ottiline/ Ottilie - one of those names that sounds fine in theory but can’t imagine actually using it, only ever heard it on MN, really good name for an otter though
Olwen - love this, know a Breton Olwen
Elowen - is it “eLOWun”? I think I like it
Morgan - I only know boy Morgans, I know a couple of Morganas but you do always want to say “le Faye” afterwards, so I wouldn’t.
How about Zennor? Lovely village and becoming quite a popular name in Cornwall. Also popular: Enys, Lamorna, Sennen
(not Grumbla, Green Bottom or Broadwoodwidger for some reason)