I suppose this is one of the bigger annoyances with modern television and movies. Actresses (mostly; men now do Botox too) who cannot raise an eyebrow. They look blank during crises. They look blank during emotional distress. They look blank when they are bored.
Arm flapping and shrieking doesn't really add anything to entertainment value. IMHO.
Go back about a dozen years, and observe foreheads. I'm serious - take the time. You'll be astonished. Try to imagine Mommy Dearest with Botox. Just try.