Reminds me of this little bit I ran across: https://strongfemaleprotagonist.com/
Specifically this spoiler, as described by TVTropes:
Feral eventually uses her Wolverine-level Healing Factor to provide donated organs that work better than donations from family members. She can donate her heart 8-10 times a day, her lungs 15-20, her liver and kidneys 30, and liters of blood, all with no risk of transferring disease or her mutation. She probably saved more lives in the first day than she did in her entire career as a superhero.
