@RickyP602,
Me is the objective, first person singular pronoun, you ought to have written "I and my wife . . . " or "My wife and I . . . "
Which probably accounts for why she is right. You can admit something, or you can admit to something. There is no difference in meaning. Nevertheless, i have no doubt that a herd (at least of small one) of other members will show up to attempt to allege a subtle difference. There is none.