Let’s see…[name]How[/name] to get the nickname [name]Remy[/name]…
I think one great way would be to use a first name beginning with R, and [name]Emilia[/name] or [name]Emmeline[/name] as a middle name. That gives you R plus [name]EMI[/name], and you’ve got [name]Remi[/name]. If you’re open to using two middle names (not two first names, but two middle names), the initials of R.E.M. would work well, too. (And of course, there’s always the initials of RM or RME.)
[name]Rose[/name] [name]Emilia[/name] and [name]Rose[/name] [name]Emilia[/name] [name]Marie[/name]/[name]Rose[/name] [name]Elizabeth[/name] [name]Marie[/name]/[name]Rose[/name] [name]Marie[/name] [name]Elizabeth[/name] come to mind.
Other ideas:
[name]Romilly[/name] [name]Marielle[/name] (instead of [name]Marie[/name], as [name]Marie[/name] is contained in [name]Marielle[/name])
[name]Romilly[/name] [name]Mariel[/name]
[name]Romilly[/name] [name]Mirabel[/name]
[name]Romilly[/name] [name]Marie[/name]
[name]Rosemary[/name] [name]Emilia[/name]
[name]Rosemarie[/name] [name]Emilia[/name]
[name]Rosalie[/name] [name]Mariel[/name]
[name]Rosalie[/name] [name]Marielle[/name]
[name]Rosalie[/name] [name]Maria[/name]
[name]Rosalie[/name] [name]Miriam[/name]
[name]Rosalie[/name] [name]Mariana[/name]
[name]Rose[/name] [name]Marielle[/name]
[name]Rose[/name] [name]Emilia[/name]
[name]Rose[/name] [name]Emilia[/name] [name]Marie[/name]
[name]Rose[/name] [name]Miranda[/name]
[name]Rose[/name] [name]Emmeline[/name] [name]Marie[/name]
[name]Rose[/name] [name]Evangeline[/name] [name]Marie[/name]
[name]Rose[/name] [name]Mariana[/name]
[name]Rose[/name] [name]Elizabeth[/name] [name]Marie[/name]
[name]Ruby[/name] [name]Mirabel[/name] [name]Eve[/name]
[name]Ruby[/name] [name]Emilia[/name] [name]Marie[/name]
[name]Ruby[/name] [name]Mirabelle[/name] [name]Esme[/name]
[name]Ruby[/name] [name]Marielle[/name] [name]Esme[/name]
[name]Ruby[/name] [name]Eleanor[/name] [name]Marie[/name]
[name]Raphaela[/name] [name]Marie[/name]
[name]Raphaela[/name] [name]Miriam[/name]
[name]Rhiannon[/name] [name]Maeve[/name]
[name]Ramona[/name] [name]Mariel[/name]
[name]Ramona[/name] [name]Mabel[/name]
[name]Ramona[/name] [name]Marie[/name]
(Like the others, I much prefer [name]Remy[/name] with a y. I think it has a sophistication and substantial feel not found in [name]Remi[/name] or other nicknames ending in I, such as [name]Becki[/name], [name]Kati[/name], [name]Jenni[/name], [name]Nikki[/name], [name]Vicki[/name], [name]Jessi[/name], etc.) 