Dear Prudence and guest Mary Goss navigate your family and relationship quandaries. First up: Is it selfish to feel fear after surviving tragedy when other people had it way worse? How can I get my hearing family to accept me? My adoptive sibling doesn’t get along with my biological family – what do I do? My friend gave me her blessing to date her ex and now she’s bad-mouthing me online. Help! My brother-in-law married into money and won’t stop talking about his lavish lifestyle – should I ask him to stop? Hear more Prudence by joining Slate Plus: Slate.com/Prudiepod.