We are finally seeing Renial's obsession in full force 
and I will be seated here for more.
Actually
and I will be seated here for more.Actually
Spoiler!
Giselle could ask the magic around her to do anything she want even if she can't controlled it directly. Since they are in the magic garden right now, the magic in that garden somehow hide Giselle from Renial's butterfly familiars.
Renial come to the garden, had another fight (he said Isabelle gave bad influence to Giselle) and bring Giselle to her room. Giselle said that they doesn't even reconciled yet but already had another fight and thought that if she angered Renial more, her confinement space would become smaller (from freely walking around the mansion to limited only in her room ).
Then, Renial said he would save the villains as her wish so she don't have to worry about anything. I think something happened and since Giselle desire is to live peacefully with the villains, the barrier around the mansion suddenly cracked bcs something happened to Windria. To summarize, Giselle save Windria. Renial saw her and brought her back to the mansion and this is the moment when Giselle confessed she like him and that she want to try dating a coworker.
Then, Renial said he would save the villains as her wish so she don't have to worry about anything. I think something happened and since Giselle desire is to live peacefully with the villains, the barrier around the mansion suddenly cracked bcs something happened to Windria. To summarize, Giselle save Windria. Renial saw her and brought her back to the mansion and this is the moment when Giselle confessed she like him and that she want to try dating a coworker.
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 