Isabel always hated Mandy, believing that Mandy had taken her position as the lady of the Allison Family.
She never let it go over the years, becoming so obsessed that her mental state occasionally became unstable.
Raised by the Versta Family, Mandy always considered them as her family and Isabel as her younger sister. After marrying into the Allison Family, she wanted to bring her adoptive parents to live in Kingstown, but they knew their daughter's feelings, so they refused.
Mandy didn't push them, and she would regularly return home to visit them. Later, because Isabel, in her obsession, tried to poison Mandy, the Versta Family elders found out and no longer allowed Mandy to return.
After Mandy unexpectedly died along with Mr. Allison, the Versta Family elders attended the funeral, coming to Kingstown for the first time, and looked at Charlotte Allison, crying uncontrollably.
