Answer
Extended use of antibiotics disrupted natural biome balance of her body by killing beneficial microbes also. This lead to the symptoms observed due to lack of functionality provided by beneficial microbes.
Work Step by Step
As above
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.