She sees a dry brownish-reddish spot a few days before her period

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She was not certain that her period had ended, and she prayed and fasted
She thought that the bleeding that results from an abortion was nifaas so she broke her fast

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Related Answers:
Purification and prayer for one who has urinary incontinence
Strange and innovated method of performing ghusl after menstruation
A woman with istihaadah (irregular bleeding) who had a regular cycle should stop praying at the time when she used to get her menses, whether at the beginning of the month, in the middle or at the end
She was not certain that her period had ended, and she prayed and fasted
She thought that the bleeding that results from an abortion was nifaas so she broke her fast

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