Haha, I brought my wife a very expensive bottle of perfume the first time I came to visit. The next time I didn't see it so I asked her where it was. She said it made her sneeze so she gave it to her cousin Alina. Sure enough Alina was wearing it the next time I saw her. Now that we have been married for 23 years I can count on one hand the number of times my wife has worn perfume. Better look for more obvious things like disappearing cellphones.
The point was to keep tabs on the Gifts .. to see what she does with them and how she answers it when something just disappears .
just because you wife gave away the perfume , does not make her a bad person ., obviously .
but if she had told you " oh i dont know , i think it was stolen, or broken, i cant remember " real CASUAL , after you spent $100 on it ( example) then I highly doubt you would be married to her today, because she would be a very different type of person.
Any woman who treats your gifts with disrespect, and places no value on the $ you spent ... that is NOT a keeper .