Thmyl Bbjy Mwbayl Ly Alhatf |best| Site
If I assume it’s a Caesar cipher with a shift of (or -15), here’s the result:
t ↔ g h ↔ s m ↔ n y ↔ b l ↔ o
On QWERTY: t → r (left one key) h → g m → n y → t l → k thmyl bbjy mwbayl ly alhatf
With this newfound understanding, Emma set out to decode the message. She worked tirelessly, substituting each letter and slowly revealing the hidden message. If I assume it’s a Caesar cipher with