Marcia had balls. In her marriage to Tony she had somehow managed to face him down and gave as good as she got. Her strong features matched a strong character and a strong determination to do things her way.
Unfortunately, doing things her way had finally prompted Tony to put her in her place for once and for all. His beating and the unveiled threat to her life had, for once, scared her into submission. The having kids thing she regarded as sensible and a bit of insurance for her survival. But then she needed a friend.
Sofia would do.