Minou and [name_f]Minette[/name_f] are my favorites! I think [name_f]Nadette[/name_f] could also work.
I do still have a question. What makes it that you don’t like [name_f]Minerva[/name_f]/[name_f]Minerve[/name_f] in [name_u]French[/name_u]? The pronunciation is not so different is it? Only the [name_u]French[/name_u] r. But correct me if I’m wrong!