Jesus sees this woman. She'd suffered for 18 years, and likely blended into the scenery in so many ways. I bet most people didn't even notice her.
But Jesus saw her. His compassion leads him to see people in ways that others do not. He notices. He cares. It's remarkable -- we come across it over and over again in the Gospels, and we take it for granted, but most of us don't move through the world this way. We don't notice a lot of suffering people, and even when we notice them, we don't really see them. Sometimes, we just notice them and find a way around them, so that their suffering doesn't drag us down.
But Jesus sees. He cares. Don't take this for granted... give thanks that you are seen by Jesus.