If you saw Christy Kirk crossing the finish line of the 127th Boston Marathon race last month, you wouldn’t see everything she had to fight through just to be there. That moment, hugging her four kids, a unicorn medal being placed around her neck, couldn’t feel further away from this time 10 years ago, or 20 years ago. Not just because Kirk, 47, was racing to raise money and awareness for stroke victims with Tedy’s Team, or because she qualified with some of the best athletes in the world. But also because she finished this race on the 20-year anniversary of the stroke that could have taken all these triumphs away from her. As you’re about to find out, it took real strength to get to that celebration. But, soaking in the scene on Boylston Street, all Kirk could feel was gratitude.