I heard that they are very good in cooking

If they are visiting, a souvenir of Japan will be fine (I assume they're visiting you in Japan?). Tips on Japanese cooking, or some local specialty perhaps? Local sake is a winner... well, I'd like it. ^^

They are very gentle and politesse.They can cook a lot of kind food!

hi! I think u should get her sumthing that symbolic japan. that wuts i think. how about u?