QUOTE(russ @ Nov 27 2007, 11:23 PM)

The US doesn't care if you vote in other countries.
Holding elected office would be an issue, that's about it.
She technically could vote, and from the news story you posted, she might be pressured to do so also, but I think it could be considered by the U.S. to be a potentially expatriating act under INA 349(a)(2): "taking an oath, affirmation or other formal declaration to a foreign state or its political subdivisions."
Loss of U.S. nationality was almost immediate consequences of foreign military service, voting in foreign elections, and the other acts listed in Section 349(a) until 1967 when the Supreme Court handed down its decision in Afroyim v. Rusk , 387 U.S. 253. In that decision, the court declared unconstitutional the provisions of Section 349(a) which provided for loss of nationality by voting in a foreign election. In so doing, the Supreme Court indicated foreign election. In so doing, the Supreme Court indicated that a U.S. citizen "has a constitutional right to remain a citizen... unless he voluntarily relinquishes that citizenship."
So, while voting in a foreign election is no longer an automatic expatriating act, it probably is now considered a potentially expatriating act. That means whenever she goes to renew or replace her passport, she will have to disclose this foreign voting and include in her explanation that she did so without the intention to relinquish.
Given these facts, I really don't think it is worth it for her to get involved in this election unless they force her to vote (and in that cause, even the foreign voting itself could be considered involuntary).