Come to think of it, Tia wore a really beautiful dress in the prologue. I think that dress was designed by her father. Gallahan is too precious to die early.
So, if Tia is going to be empress I guess she can count on the twin to lead the family as heir. I also hope she also could depends on teamwork with them, including her aunt (may be help her 'punish' her husband too? Hopefully beside her father, the aunt and the twin also the shy little girl could be her ally)
made me tear up omfg. imagine the father wrote the book in the past as well but he planned on giving it only when Tia turned 18 but everything went wrong. And now, she was given the opportunity to see the book in this life.