does my malay sound weird?

this is my colleague, S, who loves Harry Potter.
to me, she is one smart girl.
helpful,
humble
adorable.
speaks better malay than me.


today, a family member thought that she is siti, simply because she speaks better malay.
malay speaking = malay name.

the family confronted me to confirm my name. and i said yes, Siti is my name.
the next question: am i local?
i replied : yes, pure malay sg. why?
they thought that i am a thai and my malay sounded weird/funny.

i wanted to laugh. at the back of my mind... i was thinking of Idaaaaaaaaaaaaaa!!!