Having a key plot point tied to tactical neepery makes the basic premise of the Erfworld setting meaningful rather than merely cosmetic.
Hmmm... earlier, it was practically impossible to tell, since we only see character actions*, and the action of "acting sympathetic toward Jillian because she actually is" looks very much like the action of "acting sympathetic toward Jillian because it's time to show the 'good cop/caretaker' face". Now, anongst her colleagues in the situation room, she has no (as far as I can see) cynical motive to feign sympathy, which would make any attempt to countermand or undermine Parson's order most interesting. (OTOH, it could still mean only that she has plans of her own that require Jillian alive.)
Another complication is that acting a certain way tends to build habituation (e.g. acting sympathetic can lead to actually being sympathetic). It's possible that Wanda was careful to avoid such an entanglement. Perhaps she was every bit as thoroughly on guard against this effect as she was against the risk that her suggestion spell might fail....
*I vaguely recall Rob saying that he dislikes thought balloons, but I'm not sure if it was here, in a PartiallyClips commentary, or in person at a con panel (or just an outright misremembering).