I kinda bought the last vol from here https://manta.net/en/series/the-redemption-of-earl-nottingham?seriesId=2549
My memory is not very good since it’s been a while. But as I said there was a whole arch. Where Ian was struggling financially because of the Great Depression. He had to work late for months, And His insecurities are showing again. Where he think if he can’t provide Madeline everything she wants he is useless.
There is also an arch with Madeleine where she meets the brother and father of her John her burned patient.

Damn they actually skipped an entire arch, with the Great Depression from the Novel.