What I tried to get across isn't that because she is American, her life costs more. But that, America does NOT have a steady ally in the Middle East.
Israel lied about the USS Liberty, they sold our military's technology to China, they consistently create tensions in the region and have bombed Syria for the past 5 years, they continue to build illegal settlements and ethnically cleanse Arabs, they discriminate against BOTH Christians and Arabs and have created a Jewish Apartheid state. There is no need to ally with Israel, or at the very least cut back on aid. Israel has good relations with US, China, and Russia, and are not a reliable ally to one particular state or block. You have to remember that Israel is Jewish, and Jews are/were in every country, so Israel applies that principle for their foreign policy.
Israel has also lost it's previous prestige. It is a population of 9 million with an army that mostly deals with low-level terrorists. If the six-day war happened today, Israel would get crushed into the ground. Arabs have caught up, and Hezbollah gave them a run for their money in '06