I only read a bit of that run myself so I'm sure you're way more familiar with the character's history/story arcs than I am, but I wondered the same thing. That's why I laughed internally when I saw Guardians of Galaxy 1 in theaters. I was like, wait... Bereet's in THIS movie? And THAT'S HER??? lol.

But yeah, she just disappeared into comic obscurity it seems. Not sure if she popped up anywhere else.