Yes, all ethical types display emotionality, however those with strong (4D)
tend to display it the most and/or the most strongly, and I find this applies to Jennifer.
She seems to display
Demonstrative over
Ignoring. You could argue she's got Creative Fe and is an SEI, however she seems to value
, so that's out.
When it comes to the expression of emotionality, I find
to be the key; both its placement and its strength matters.
From most to least outwardly expressive* (ime): ExFj > ExFp > IxFp > ExTp > ExTj > IxFj > IxTj > IxTp.
* That means through facial expressions like laughing, smiling; variation of voice intonation.
The louder, brighter, more varied and intense any of those elements, the more "outwardly expressive" the person.
The more monotone the voice and sporadic or weak the facial expressions, the less "outwardly expressive" the person.