What we have cannot be compromised by what we eat, or other external matters. What we have is eternal -- complete approval from God, resurrection from physical death, everlasting life -- and none of it earned by our religious actions, but given as a gift by Jesus.
Have you never read what David did, when he was in need and was hungry, he and those who were with him: how he entered the house of God, in the time of Abiathar the high priest, and ate the bread of the Presence, which it is not lawful for any but the priests to eat, and also gave it to those who were with him?
Give her some space: modern Jewish history is political and bloody. They are still G-d's Chosen People, and we should support them.
The notion of Divine Grace was not in the original Covenant of G-d to His Chosen until the new King of Israel. We, through the blood and incredible suffering of Our Lord and Savior, have a cultural and metaphysical advantage that allows us to relax a little more and make fun of ourselves, whereas Jewry has been persecuted for, oh, about 3000 years now, mostly violently. In a discrete sense, being Jewish is more demanding, faith-wise, than being Christian.
G-d doesn't break promises.
Thank you for confirming my original thoughts about you.