This would only happen to a chad dad...
The best thing to do would be to get a DNA test, because knowing Western foids, even chads get cucked sometimes.
If she's not yours, divorce your old roastie wife and swap her out for your "daughter" because she is a new model femoid with a better warranty.
Revenge on your wife and the chad who made the daughter your smashing.
If she's actually yours, pretend that you're interested in her and manipulate her into bringing her teenage friends over.