Huh, weird. Mine has Spider-Girl and Arana on the cover.
But does it have the correct number where the issue's cover should say #19?
Yes. Marvel cocked up really bad at the printers. The latest issue is supposed to be #19, but #17 is printed on the front. However there are variants with Arana as a Skrull and the proper issue number on the front. The comic store I go to in Central London even had a note under the latest issues explaining the situation and being sarcastic to Marvel. The sign started with "In all of their wisdom Marvel have printed the number 17 on #19 of Spider-Girl." They then went on explaining that they had variants at the counter with the correct number and apologised for the confusion Marvel had given people.
but everyone else gets to watch their collections go 16, 17, 18, 17...t: