I think some of you are missing my point.
It is possible that these items were purchased on board as part of the crew purchase scheme. She could have taken them home and added them to a collection. What she does with them is her business. Sometimes they are handy to have around the house. Sometimes a crew member will buy 'crew purchase' but after arriving may decide not to go to the room party. He or she is pefectly entitled to take the unused purchase items home - however they do need be checked in for the inbound flight.
I used to buy the small drink cans because they are great for kids lunches. You can also buy these cans in the supermarket. Does this mean now that I have to save all of my receipt just in case of police raid?
I'm not defending theft, I'm saying that we don't know if this actually was theft.