She saw menstrual blood after breaking the fast, but she is not sure whether it came before or after breaking the fast

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Maximum period for post-childbirth bleeding
Her period ended then she saw some drops of blood

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Related Answers:
A woman has been bleeding after childbirth for 40 days and it has not yet stopped. Should she fast and pray?
If her period begins before sunset, even if it is just a moment before, her fast is invalidated and she has to make it up.
Her period comes regularly but the bleeding stops for half a day or a day at the beginning and end
Maximum period for post-childbirth bleeding
Her period ended then she saw some drops of blood

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