What did your wife do? My cat (Lincoln Garfield McKinley [because I liked naming the cat after all assassinated Presidents for whom their assassination did not unwarrantedly raise their historical standing) barfs often. At least three or four times a weeks. At her worst two or three times in a day.
Vet says basically "don't worry, be happy." Idiopathic cat barf. Tried different foods. Tried making sure water was always fresh. Tried lots of brushing to keep the hair out of her more. Tried threats. Considered the microwave. Nothing ever made a difference.
little bastad is a money pit - eats only the little cans of food, Fancy Feasts? She only puts a small amount down, and does it like 6-8 times a day.
He used to have food down all the time, and would gorge and hurl. Now - not so much. She scores them when they are on sale and she has coupons, but that cat costs more then I do a day!
Sean