She is jealous that Robert treasures a gift a from another woman.
Explanation:
In this section, we learn that Edna asks Robert questions in order to gain more information about the woman who gave him the pouch. Edna asks him what she was like, and whether he knew her very well. She also asks whether he invited her to his house, and whether she was interesting. Although Robert answers in a vague way and claims she was not important, Edna continues to be interested. This shows that Edna is jealous of the present and the woman who gave it to Robert.
