
I kinda feel bad for the og Irene, her family doesn't even know that she is no longer with them.

Spoiler:
I don't remember about the father and brother, but the mother pretty much knows. She's just happy to her daughter back in whatever form. FL later reveals she's not the og Irene, but they accept her anyway.
Also, Irene's soul swapped places with FL's and she's now living happily as a guide in modern Korea. Since FL and ML went back in time in addition to isekai-ing, ML didn't get tricked into crossing worlds and Irene (as FL) is paired with her own esper. Near the end, FL has this "dream" where she sees some of Irene's current life and the two talk for a bit.

MC is a huge dumbass, and she is getting dumber by the minute. She will most probably end up rejecting or postponing the response to the ML now because in her mind "ML must be in love with the original Yvonne which I am not" even though ML has not even met the original Yvonne in this timeline and MC herself is most probably the original Yvonne who just lost her memories.
I wonder if the dumbness is also a side effect of memory loss or was she always this dumb ? ╮( ̄▽ ̄)╭
Apart from the overt capitalistic obsession in this manhwa (then again plenty of manhwa seem to into it one way or another), I quite enjoy trying to live up to her villainess obsession.
Same, I feel like villainess novels break up into either the Fl trying to break away from the villain stereotype and suiting the heroine role better, or taking advantage of her Villainess reputation and using it for the better.