The project is based on the Mexican series Terminales, Deadline reports.
The show focuses on what happens when a successful young publicist called April Marquez discovers that she has terminal cancer.
Del Shores, who previously worked on shows such as Dharma & Greg and Queer As Folk USA, has signed up to write the script.
He will executive produce the project alongside Aaron Kaplan, who is also working on Fox's new drama Terra Nova and ABC's freshman show Good Christian Belles.
Other shows in development at ABC Family include a drama from Miranda Lambert which focuses on two parents working as private investigators. The project is being produced by Kaplan.
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