iamyourmother

Im trying to find this isekai where the mc (supposedly a villainess) approached a duke (I'm not sure but he's of high status) but he's a bit on the crazy side and at the start, mc was trying to avoid him but he noticed her before she could flee and held her at his blade point (he was smiling if i'm not wrong), and she was trying to seem nonchalant to avoid being killed (cuz apparently if she shows that she's scared, she could die?? idk I can't rmbr much) pls helpp!! also I think she got sick after that encounter, and was bedridden for a few days?

a book about an mc who is reincarnated and become a villainess. she doesnt rly want to be the good guy so she just follow the plot, except that shes smarter than the previous villainess