I Felt Sooo Bad!

Well I had a bad experience this week we were walking trying to hurry to catch a bus to get to Vera's she had a friend over, and we were across town so we were trying to get there fast well I saw this old lady on her crutches and with her groceries, it was hot, and I had the thought to stop and help her but I. Call is one that just presses onward and well people usually reject us when we ask to help so I let that over ride my thinking, well we're half way down the street and I hear this BAM-and then awful cries of pain, we turn around and the lady got hit by a VAN! It was still on top of her and she's just crying in pain-it was awful. How do I not guilt trip myself I felt horrible afterwards that whole night-I felt like I caused her the pain, but I don't know what would have happened but the image in my head of her and I beat myself up and really listen to the spirit-sigh-I'm so imperfect. I don't know, I just know things happen for a reason, I feel better now, I'm so grateful for prayer.