One thing I noticed about Em is that she can be easily directed to any direction when she has a leader:
Em did well when she was with Lisa, when that brat boy was not around. Lisa had an impressive discipline organizing parties every weekend (Alex tradition). Em simply followed.
When she was with Sid in Alex's place, I saw Em followed Sid's direction when she fucked Bob (many of you might disagree, but I saw it). The problem was that once she tasted his dick, she couldn't help it even Sia crying did't help.
Bob was not leading Em to a VH or cam-girl career direction, since Bob was in true love with Em. Poor guy didn't know the difference between lust and love.
The only hope for Em's involvement with VH was lovely Sia. Unfortunately, Sia became the victim of bad camera setup IMO. Sia would do just great if the camera setup was done like what we have in George apartments. Unfortunately, perfectionism and business acumen is not Alex thing, as nice as he is with his people.
In short, Em would do just fine in VH under a good leadership. Something that neither of Sid or Bob could provide.