I think I've seen and read every interview of Sara (English and Portuguese) and I have never seen her saying something like that so I would love to see those too. The closest I have seen of Sara talking about her English/accent is when people compliment it and she says she has gotten good at it because she watches countless of American tv shows. Still, never saw her saying it is perfect.
Anyways, Sara would be stupid to drop her modelling career for a Portuguese soup opera and considering the average soup opera in Portugal has 300 episodes and the actors usually film around 8h-12h a day that's what it would have to happen.Also, I dont get the comparison of Sara with Daniela and Diogo, they were actors all along, they didnt have an international, super sucessful modelling career so doing soup operas in Portugal made sense to them. Sara not doing them doesn't mean she's not humble, it means she aint dumb. She should get training, go to classes, and put in the work whilst still working in fashion so when the right opportunities como along she's ready (which is what she's been doing). Actually, Sara has recently said that she already got a couple of roles but she couldn't do it because she already had fashion jobs so I am glad she's not dropping modelling for the first thing that comes along.