Maybe these?
https://www.mangago.zone/read-manga/how_to_survive_as_a_maid_in_a_horror_game/
https://www.mangago.zone/read-manga/my_mom_entered_a_contract_marriage_bored_corona_kids_version/
Or maybe even https://www.mangago.zone/read-manga/the_blood_of_madam_giselle/ but it has smut and a bad ending (⌒▽⌒)
'The broken ring' maybe, not exactly similar story but the fl having trauma and the complicated story is similar
'How to bring my husband to my side'-- has a good art, also has a traumatized fmc, it's a sweet story about mc healing
The reason why raeliana ended up at the dukes mansion
Your eternal lies
Any recommendations like similar to Secret Lady and Stepmother's Marchën? I like it more for the plot but I would appreciate a good artstyle