Karen Suadela & New Inquisition

Karen Suadela, 7, POT CEL pre obf, Brujah, 5, [KoT]
Camarilla Prince of Houston: Gehenna cards do not affect Karen while she is a prince. She gets +1 stealth on undirected actions.

New Inquisition, The, Event, 1 Gehenna card, R , [G]
Gehenna. Do not replace until a titled vampire goes to torpor. Requires at least one other Gehenna card in play. During each Methuselah`s untap phase, he or she may choose a ready vampire controlled by his or her prey. That vampire takes 1 unpreventable damage. Any titled vampire may call a referendum to burn this card as a +1 stealth political action.

The question is...does karen take damage from New Inquisiton???

I am thinking that she is immune... but lets hear it from the Judge...

Thanks

Why would she take damage? As long as she's a Prince, she is unaffected by any Gehena cards, which New Inquisition is.

Why do you think there are any doubts about that?

Just checking... since the effect is triggered by other Methuselah I decided to check...

Its always nasty to be playing a card and hearing from someone something like:

->There is a ruling regarding that card that says this and that... you cannot do that.

Thanks.

I was just 99% certain...

For Pascal:

If Karen Suadela is a ready vampire controlled by your prey, can you still choose her for New Inquisition knowing that she will take no damage (being immune) to the card? Does this fall under the "you can't take actions/use effects that would have no results" ruling?