How do you spell jasmine in Japanese letters?

けいとりん or ケイトリンPronounced "keh-ee-to-reen" spelled "Keitorin" in Romaji.

け and ケ mean "ke"

い and イ mean "i"

と and ト mean "to"

り and リ mean "ri"

ん and ン mean "n"

Since Katelyn is a western name, ケイトリン is more appropriate as it is Katakana for Keitorin and Katakana is used for foreign Words, names, and onomatopoeic Words.