she picks on the bad acting
One can't help but wonder if, while her mom was watching her soaps, your mom ever paid attention to the acting on them? If so, she must have blocked them all out because the acting on other soaps was often quite terrible - much worse than the worst on DS. And that's pretty bad when one considers things like Geoffrey Scott's performances as Sky Rumson during Leviathans.
when i see someone over acting
Believe it or not, much of what's interpreted as overacting today was dictated by the directors and DC to heighten the show. They wanted the scenes played that way. In fact, after rehearsals, notes would often come down from on high to bring "more" to the performances, not less.
It was definitely a style choice.