Actually, I think Jessica is pretty nuanced. Honestly, I don't think she is campy. Yes it's big and broad at times but it's also very detailed.
A woman like Constance had her flowery, showy moments but they seemed authentic. Sister Jude is repressing her rage and passion so I assume that requires broader strokes.
I think Jessica is doing some of her best work.
"The sexual energy between the mother and son really concerns me!"-random woman behind me at Next to Normal
"I want to meet him after and bang him!"-random woman who exposed her breasts at Rock of Ages, referring to James Carpinello