Is it fair to place all the blame on a non vaccinated who got sick from someone who is triple vaxxed ?

My wife who is triple vaxxed say's it's all my fault and places 100% blame on me for her getting sick with covid because i didn't get vaccinated even tho we were all exposed at the same time from someone who was also triple vaccinated

How could it possibly be my fault when the vaccine they took didn't do the job it was supposed to do?
Is it fair to place all the blame on a non vaccinated who got sick from someone who is triple vaxxed ?
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