Here are the pixies that could bond with our new friend:
Glim: She's adorable! Wouldn't rascally Roxy just fall for this cutie? I could see them together; the colors of Glim's pixie outfit and Roxy's Believix would look nice together. I think Glim would make a great new-to-Magix pixie.
Zing: Do any fans really want to see Zing taken?
Zing and Roxy seem to have the same spirit, Zing would be the perfect match for Roxy that Digit was for Tecna. I do hope that Roxy bonds with Zing, we don't see enough of this pixie!
Livy: My favorite out of all the pixies. I actually think that Livy is popular enough to actually be the one to bond with Roxy. Besides, wouldn't that be a cool storyline? Roxy trying to learn all about Magix with a forgetful pixie like Livy at her side.