la madrastra in English:

Most children do not accept their stepmothers.

My father married his girlfriend so I now have a stepmother.

A few years ago, on Mother's Day, I gave my stepmother a locket as a present.

This is Tanya, my stepmother.

Ben was 10 years old, when his stepmother married his dad.

Her stepmother loves her like her own daughter.

Your stepmother has two children.

When my father re-married, it took us a while to get used to our stepmother.

My stepmother comes from a wealthy family.

The stepmother sneered at Cinderella.