Answer:
Obsessive compulsive disorder (OCD).
Step-by-step explanation:
Obsessive-compulsive disorder (OCD) is a behavioral disorder where a person feels compelled to do things in a certain way or do specific things at a certain time. This disorder is a mental illness that at times can become so extreme that the person feels anxious about anything.
In the given case of Jillian, her obsessive disorder is evident in her need to "wash all the linens and floors, vacuuming the carpets, and organizing everything in her cupboards". And if she doesn't do these things, she feels a sense of "overwhelming discomfort" leaving her unable to concentrate or even do her work.
Thus, the correct answer is that Jillian probably has OCD.