It's pretty. I personally would use
Katherine rather than
Catarina (I prefer the K spelling for
Katherine.)
Catarina would feel forced and artificial for me personally, but objectively I like
Catarina as much as I do
Katherine.
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I am all for finding loving homes for children who truly need them.
I am against unnecessary, unethical, forced, and illegal "adoptions".
I do not support sealed records, altered birth certificates, coercion of first parents, unenforceable "open" adoptions, and avoidance of fathers' rights.