This story is a sequel to Family Trip
Sunset and Spitfire used to be close before having a falling out. Having recently reconnected, the two sisters are closer than ever along with their brother Sunburst. When Sunset gets told Spitfire needs surgery after a flying accident, Sunset reconnects with the last pony she expected.
https://www.deviantart.com/featherfury/art/MLP-The-Phoenix-and-the-Dodo-588328924
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