Being cuckolded (in this context) means unknowingly raising not-your-genetic-offspring while believing it is your own. A male partner's infidelity can't cuckold a woman.

But I imagine most mothers would be horrified to discover, ten years after the fact, that their newborn was stolen and replaced with someone else's, and the child they've devoted so much to is not actually their genetic offspring. A brief bout of Google indicates that hospital baby swaps can spark multimillion dollar lawsuits, sometimes successful...