@Introvert So
Spoiler!
The duke continues and ask why she went to the top street. She tries to deny that she knows where that is. He then said there had been a testimony that Becky also went there before Penelope's coming of age ceremony. Derick tries to stop him but the Duke tells him to shut his mouth. They had interrogated the head maid whilst Yvonne was out. She had been left out of the original investigation as she had worked loyally in the house for so many years but when confronted today she admitted the maid had went to top street to buy something for Yvonne. The duke thought back to Vinter's words about why would Penelope ignore her loyal maid and would use Yvonne's maid to buy poison. It didn't make sense.
Why did the maid suddenly commit suicide and why did Emily disappear after Penelope ran away. He then asks Yvonne did she order the head maid to prepare the poisoned cup as she could participate in the ceremony. Derek asks if this is true. Reynald (who is still drunk fyi) says in wonder that so Penelope wasn't doing a self play and that Yvonne was trying to poison her? But then he remembers he found an antidote and that the cups had been changed. Then realization hits him that it was meant to be Yvonne's self play. He remembers Yvonne crying with a dead face when Penelope fell but to think it was all an act. Derick tells not to jump to any conclusions yet and asks her again is it true.
Why did the maid suddenly commit suicide and why did Emily disappear after Penelope ran away. He then asks Yvonne did she order the head maid to prepare the poisoned cup as she could participate in the ceremony. Derek asks if this is true. Reynald (who is still drunk fyi) says in wonder that so Penelope wasn't doing a self play and that Yvonne was trying to poison her? But then he remembers he found an antidote and that the cups had been changed. Then realization hits him that it was meant to be Yvonne's self play. He remembers Yvonne crying with a dead face when Penelope fell but to think it was all an act. Derick tells not to jump to any conclusions yet and asks her again is it true.
I like to post spoilers for the stories I find interesting because I don't have much time to read novel due to busy schedule
you will find me in most romantic historical manhwa comment sections 
you will find me in most romantic historical manhwa comment sections 