Rosalinda is lovely. She'll only be Roz if she wants to be. She could as easily be a Rosa as a nickname. People do tend to take your lead with nicknames. When Edwards are known as Ted you rarely get others randomly calling them Ed or Ned unless they are encouraged, for example.
Nerea is lovely, but is likely to be mis-pronounced in the UK, and many people will assume it is made up. So it depends if either of those things bother you. Some people wouldn't care, others would mind. I would probably have guessed Ney-ree s the pronounciation.
Thanks guys - hadn't really thought about Nerea being mispronounced here as in Spanish you say every letter in the word (if that makes sense?!) The other thing is that long term we do hope to move to Spain and weirdly Nerea is more conventional there than Rosalind!
I think Rosalind edges it for me overall (though DH isn't keen). Totally going to end up tossing a coin in the delivery room!
It does make sense. And actually, from the little Spanish I know, if I had known it was a Spanish name I probably would have pronounced it correctly. It's just in a vacuum of information I would have got it wrong, if that makes sense.