@ this almost being a 50/50 split...
I can't at some people thinking that just because C'Mon and Crazy Kids didn't hit the Top 10, she won't ever be able to score another #1 hit. Of course she still has a chance, she's a relevant popstar that just happened to suffer the unfortunate "sophomore slump". There's a term for that for a reason, it's not an uncommon occurrence. Neither is it uncommon for artists to come back from "flop" eras with very successful ones.
She can definitely get another #1, but it goes without saying that her best chance is with the lead single from album #3. The only reason that Die Young didn't reach #1 was because it had the competition of Rihanna's Diamonds, the female artist with the second highest amount of Billboard Hot 100 #1 singles of all time.
It's actually more delusional to say "no, she never will, not a chance" than it is to entertain the possibility.