Rosalie is pretty, warm, old fashioned, and approachable. I know an older lady named
Rosalie, and she is a lovely, hospitable person with a fondness for gardening, so I tend to associate the name with her characteristics.
I wouldn't pair
Rosalie with a another plant name or a middle name beginning with E. I do like a lot of your combos.
Rosalie Tanith &
Rosalie Florence are nice.
Other combos:
Rosalie BeatrixRosalie GwyneiraRosalie MoiraRosalie Phaenna Rosalie HeraRosalie Thamina