Cain is a junior in hs, not a soph as noted above. Ef is a soph.
Ef lives 10 miles from Nike campus and who knows maybe Salazar talks to her about joining the group next year but to knock her for doing what 99.999% of hs runners have always done is immature and ridiculous. It does make what she does a little slower than Cain (so far) more impressive to many because she is running solo and not getting all the amenities that Cain has had race-wise and training-wise.
I am sure that Ef looks at what Cain is doing and says, "I want to run that fast" and is getting her and other prep distance runners to raise the bar just like Webb did.