4. Sign up for an Adventure Together
Instead of only focusing on memories from the past, create new memories together as well. Sign up for a half-marathon or 10K race, plan a biking trip, take a cooking class together or go to a local concert. Do something fun and unexpected—something you’ll both love and will never forget.

5. Help Her Relive Fun Childhood Memories
Think about the activities and items your sister loved as a kid, then bring them back to life and enjoy them together as adults. Watch an old movie, give her a collection of her favorite books that she can now read to her kids, cook her a favorite meal from growing up etc. The idea is to revisit the past and then reinvent it so you can enjoy it together, as adults.