Dear Prudence is Slate’s advice column. For this edition, Rebecca Onion, a Slate senior writer, will be filling in as Prudie. Submit questions here. (It’s anonymous!)

Dear Prudence,

I love my adult daughter, but I can’t stand the person she has grown up to be. She is entirely self-centered, selfish, and materialistic. She is obsessed with status and fakes a wealthy lifestyle, but turns around and demands that her mother and I pay her bills. It has been a constant problem since she went to college and fell into a fast crowd. My ex and I grew up in very humble origins. We never had to worry about putting food on the table, but vacations were going to see Grandma, not Grenada.

My ex gave our daughter an old but paid-off car. She promptly traded it in for a flashy, expensive one—a

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