It would help to show them memory albums of their loved one. Listen to them, even if they kind of don't make since but also tell them sweet stories of family memories. She all the family pictures you can and remind them of who each person is. Sometimes it may spark a happy moment and make them happy. I also worked with one lady who really missed her momma and so us caregivers would get on the phone and pretend to be momma and ask her if she'd like to speak to momma. It made her very happy and then she would be alright. It also help to keep her busy with anything, even if you stack wash clothes with her. If you have something that your loved one can hold or carry around with them that may remind them of a happy time then do so. Your loved one may like to wear a sweater that belonged to the other loved one that they missed to feel closer to them.