The East African (Somali, Ethiopian, Djiboutian, Eritrean) version of this name tends to use an "i" for the middle vowel. I have seen this name spelled in many different ways for Somali girls in my region: Ruqiyyah; Rukya; Rhukkiya; Rukiyah; Rhukiya; Ruqqiya; Ruqiyya; Ruqiya; Ruqqyya; Rukia; Rukiah; and Rhukia. I have seen all of these used since Arabic and Arabic-based alphabets exclude so many sounds in the spelling of words that Latinizations can vary wildly.
Ruqiyyah; Rukya; Rhukkiya; Rukiyah; Rhukiya; Ruqqiya; Ruqiyya; Ruqiya; Ruqqyya; Rukia; Rukiah; and Rhukia.
I have seen all of these used since Arabic and Arabic-based alphabets exclude so many sounds in the spelling of words that Latinizations can vary wildly.