Hello Cuddley, giving them a book (or suggesting it, or getting it from the library) is a good idea. Perhaps even more important is to talk to them about it honestly and be upfront with the specific ways that it affects you. Have you talked to them, and they don't listen or believe you? If you tell us more about your situation we may be able to be more helpful, because many of us here have been in the position of being not believed by the the people we count on for support, and we will offer you all the help we can.
Welcome to the forum, and I hope that this is a good space for you.