Nope. They are similar to heliumgirl's works, but the characterization is completely different. Heliumgirl's Lucy is portrayed as an unwilling participant to her own abilities, while the character in the stoires I'm looking for is overly confident, which leads her into trouble.
Yet another looking for a story request
I saw a pair of stories not too long ago on DeviantArt, I believe. Unfortunately, I have been unable to find them since. The stories were about a young woman with an interesting ability. When she becomes sexually arroused, her body begins to fill with bubbles, and she can either allow the bubbles to fill her or she can pass on the bubbles to someone else. In the first story she meets a young man at a party and, confident that he is too drunk to remember, takes him off to a bedroom and fills him with her bubbles, only to have the bubbles returned. He falls asleap on the bed and she finds herself floating on the ceiling. The second story she meets the same man again at a less raunchy party at a friend's home. Again, the two find themselves in a bedroom, but as the bubbles begin to percolate within her, he gets a phone call and leaves the room, leaving her chest to inflate before she can pass on the bubbles. He returns, realizes that the previous party events were not a hallucination, and the two get to know each other better.
I know the stories you're talking about, and they feature some really really excellent writing! I forget the titles, but I did find the author's DA page for you:
http://heliumgirl77.deviantart.com/gallery/