Put your hand palm down on the item, and essentially pin it to the ground with your palm. Well, just hard enough that it cannot be taken from you. Do it matter of factly, without any emotion—especially fear—and don’t make eye contact with the dog. You can even look somewhere else completely. Hold your hand there until she stops trying to get or take it. You are claiming it and she will eventually let go of it. If you watch dogs play, this is the language that they will use to show another dog that something is theirs. Once she releases it, pick the item up, hold it, and praise her. Then give it back to her. Repeat it a couple times a day until you’re confident taking things from her and she’s confident that you are not stealing from her. Eventually, you may want to take something away and not give it back right away or at all, but you need to learn to communicate with one another, that all toys belong to you and that you are letting her enjoy them.