I don't think the comparison with your sister is appropriate. That would be a personal attack.
But it is the most appropriate comparison, Har-Tru. A truly religious feeling (again, in its origin and not in its perversion as we see today) is an intimate, deeply personal
communion with God or the saint or guru who brought you in contact with Truth/Consciousness/Divine. It is very personal and when someone hurts the one you love and revere deeply, in such an ignorant manner, you take it extremely personally.
Forget Jesus. Think about someone hurting someone you really love, truly, madly, deeply - your child, wife, friend, mother, father. It doesn't matter who. The hurt is exactly the same intensity.