Sorry, I'm afraid any story/reasoning for all that had to do with Violet and her parents generation would be pure speculation on my part. Obviously, there were Steele/Steel and Curren couples left and right, and Violet was a part of that intriguing family group. As for how, why, where, and what, I am only able to help with the latter two. Surely, it shall be an adventure for you, as you seek out the hows and whys! :-)
Cheers,
Jared