I read this exact thread a few months ago.
We have a baby Reeva at nursery, we've known the family for years and looked after all 4 of their children. When I heard they'd named the new baby Reeva I did think of Reeva Steenkamp but now she's nearly 1, she's just 'Reeva'! If you like it I'd 100% go for it, people become their name! People in your life will associate the name Reeva with your baby as soon as they meet her.