Hindi ako mister, mama! Pero swak ang idea mo, my husband does the same thing kapag gusto niya mag-surprise, at ang partner ko laging happy talaga sa thoughtful gifts like that, lalo na pag personalized to her taste. A few of us moms are suckers for a good perfume dahil it's one of those things na parang "me time" lagi kahit nasa bahay lang tayo with the kids! Para sigurado na magugustuhan, maybe ask her friends or check kung ano ang scent profile niya usually, fruity, floral, fresh, para di off. Good luck sa surprise!