On the latest episode she accused him of being "a raging, psychopathic, pathological liar" when he said he was a medical doctor.
After a guest got a bloody nose at a pool party Tyler rushed to help out, but when Dina queried his medical expertise he told her to "back up."
That's when Mrs. Eastwood lost it and the pair had a nasty little spat in front of the others.
The family drama continues on "Mrs. Eastwood & Company," Sundays at 10 p.m. ET on E!
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