That Natalie is a cradle robber, lol (spoilers?)
I don't know how old she REALLY is (she isn't even listed in 10/12's episode cast), but she looks about 18.
She said, during that episode, that she is dating a 9th grader. Not sure what the national average age is for a 9th grader, but I was 12 when I started 9th.
That's a bit of an age gap, lol.