This is where I met the girl who’s working in a school.

This is where I met the girl who's working in a school.
This is where I met the girl who is working in a school.
我想表达的事“这是我碰到那位正在学校工作的女孩的地方.”
我用了 “is” “met” “is working”,有现在式,过去式,进行式.我记得会死不是在同一个句子里（包括从句）,都必须实用同一种时态.所以是不是得说“who was woking.”.

this is where I met that girl working at school
your sentense is almost right except one mistake that you replaced who with who's
actually, my answer will be exactly better than yours

谢谢解答