Well, she moves the needle as much as Nick Diaz. People were swift to give him props for the 900k PPV buys of his fight with GSP but it was just 200k more than the Condit fight. Before that, GSP vs Shields drew near 800k in a record breaking 11M gate in a stadium filled with 55k people (UFC all time record).
So Bethe has the same kind of impact, adding a significant effect on Ronda PPV buys but lacking the power to draw by herself. Now that her name is known, she might be able to draw some attention but she will never be a "needle mover" unless she fights another big name.