You may have entered the donations on your wife's return and by mistake chose to split them or claim them all on your own return. I've attached a screenshot showing how this could happen.
If this is still happening after checking that it has not been claimed this way, our Customer Support team will be better able to assist you
with this. Please follow the instructions below to reach an agent who can
assist you with this.
https://turbotax.community.intuit.ca/replies/3152013
