I recall taking a test with that question in it , i believe they were giggling? when they heard her coming down the hallway, the answer would be giggling..
I believe “satisfyingly” would work, the definition of satisfyingly is: “in a way that gives fulfillment or the pleasure associated with this.” The definition of “proudly” is: “with a feeling of deep pleasure or satisfaction in one's own achievements, qualities, or possessions or those of someone with whom one is closely associated.” The word satisfy is used in the definition so I believe they are similar!
Clerihew is the answer i think
