It was an unhappy Mother’s Day for Arlene Lendor, who spent Sunday afternoon in the hospital with her 7-year-old daughter Hanna.

For more than two years, Hanna has suffered from pain, shortness of breath and headaches.

Despite numerous tests, doctors are unable to determine what the cause of her illness is, much less give it a name, reports The Trinidad & Tobago Express.

Hanna, of Port of Spain, Trinidad and Tobago, has missed about nine months of school. For the past two months, she has been hooked up to an oxygen tank at a hospital and Lendor, a single mother, said she has quit her job in order to care for her sick daughter.

“It’s like a waiting game, you just don’t know what is going to happen,” Lendor told the newspaper. “I am fed up.”

Doctors have sent Hanna’s blood to Canada and England in hopes that medical experts there can pinpoint the source of her problems.

Click here to read the full story from the Trinidad & Tobago Express.

Click here to discuss this story.