Helping survivors heal. That’s been the mission of the YWCA of Western Mass. for 150 years. Today, the agency does this in a number of ways, some well-known, such as its 58-bed domestic-violence shelter, and others far-less-heralded but still important, such as helping area young people attain their high-school equivalency. In each case, the key is providing these survivors with the tools they need to achieve a higher quality of life.