She may also consider attempting to determine if she would be classified as having a disability under the ADA. If so, the accommodations would be a more permanent allowance of an altered work schedule.
Flma basically covers time lost from work. If they are counting her reduced hours against her fmla available time she might exceed that, depending on how much time they are considering her as missing. You get up to 12 weeks protected leave per year. Once that time is exceeded, the employer is not obligated to retain you or reserve your position.

