Final answer:
In a dramatic storyline, Sophie is the character who blames someone for leaving their mom and marrying another woman.
Step-by-step explanation:
The character who blames someone for dumping their mom and marrying another woman is Sophie. This question references a plot detail from a story, likely in the context of drama or literature studies. It is often seen in storylines where characters face familial or relational challenges, such as in a play, book, or film. The frustration of seeing a parent move on to a new relationship while disregarding their previous family can provoke strong emotions and reactions from the characters involved.