If you're a member of Congress or Parliament in ANY country and you undermine the country's security through your actions, of course, you get stripped off your immunity and you may even get jail time. And if she is a Palestinian national living in Israel, it's only natural her citizenship should be revoked. When you're not a national of a country, you gain citizenship by pledging allegiance to that country, not by getting involved in actions that kill its soldiers!
Saudi Arabian king cuts France trip short after beach controversy (Reuters)
from the article: Interior Minister seeks to strip Israeli Arab MK of citizenship