The story seems to have two female figures. But in my opinion, they are just one person who has a split personality or in other words two person who are falling into the same track of life.

这个故事看起来似乎有两个女主人公，可我认为，不过是同一个人罢了，或许是人格分裂，抑或是踏入了相同的生活轨迹。

youdao

By using a split-page journal, Sara has ensured that she will be able to track her own growing database, as well as her own understanding of that database .

萨拉确信，通过使用分页的反思日志，她就能够集腋成裘，使自己的数据库不断增长，并丰富自己对数据库的理解。

youdao

The task of delivering a satisfactory service is complicated by the split between track and train operations with both sides blaming one another for poor performance.

ECONOMIST: Railways

Everywhere there are TVs with split screens showing the two tracks of negotiations: one track for everyone, and the other for those who signed up to the Kyoto Protocol 12 years ago.

BBC: Harrabin's Notes: Inside Copenhagen