Each week, exclusively for Slate Plus members , Prudie discusses a new letter with a fellow Slate colleague. Have a question for Prudie? Submit it here .

Dear Prudence,

My partner and I are both in our fifties. I was divorced and never had kids, while my partner was a single mom of three for most of her life. It has been an adjustment coming to live together and learning to navigate each other’s space. The one place I am not willing to compromise is the privacy of our bedroom. It is an adult space for adults, but her grandchildren have zero respect for that fact, and the situation is getting very uncomfortable.

They barge in without knocking, will climb into our clean sheets with their dirty shoes or dump their crumbs, and worse, demand to sleep with Grandma rather than stay

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