This is what's called "grooming". It is not unusual at all for people of high background to enroll their children in multiple disciplines: tennis, ballet, singing, karate, etc and because they are children they end up becoming quite proficient in all of these things.. Their parents have the money and free time to do this, while the average person does not.
And even though Bethany may or may not be full of shit,(she might have been offended the guy was propositioning her and decided to rip him off) there are plenty of people with legit resumes like that--they just don't post on getbig 24/7
The iq of 191 is certainly bullshit though, and calls in to question her entire resume.