Yep, that's the cover story, she's May's "cousin" April Reilly.
And I think Peter should be nicer to her, too. Hopefully he learns soon!
Not to try and change your mind, but Spider-Man Family is a really fun title all around. Even the BND stories in it aren't so bad. The Harry/Peter one was much, MUCH better than what we got in the main Spidey titles.