So I think that
Megan thought she was go to get more out of it, money and fame... She knew exactly what she was getting into when she hitched her wagon to the Royals... Harry and Megan will always stand behind William and Kate,... and more than likely Harry will never be King, so she will never be Queen... I think that once the wedding and media frenzy started subsiding, she realized that she was not the bell of the ball... plus she is an actress, they live to be in the lime-light...
Make no mistake Megan is in control... so if she is all ready doing voice over for Disney... that means that this was already in her plans...
I really don't see Prince Harry looking for fame and fortune.... I think his mom would want him to be happy and stand on his own... but never would she want to see the brothers split apart...