Duchess Timeline and Summary

We learn that Vindice is unimpressed with the Duchess.
The Duchess isn't so keen on justice, at least where her son is concerned. She also decides to have an affair with her stepson to get revenge on her husband.
The Duchess is unwittingly part of Vindice's revenge on the Duke, since Vindice shows the dying Duke the sight of the Duchess and Spurio meeting up for a love fest.
We learn that Lussurioso has made good on his threat to banish the Duchess. Who knows where she winds up? Could be a dingy cottage in the country, could be Bermuda.