Did I translate my Elvish name correctly?

I chose Quenya, and am pretty new to learning this stuff.

I chose Ruiel, to mean "daughter of tranquility," but I also see that there is a prefix, Ru-, which could easily change my name to "daughter of evil."

The root you used, RUH, is from a draft version of Quenya (1910s). I suggest using SED instead. This way, you also don't confuse yourself with hru-:

• Sériel, "Daughter of Rest/Repose."

• Estendil, "Devoted to (Valië) Este," or Estendur, "Servant of (Valië) Este."

All Quenya, BTW.

Thank you so much! This is very helpful.