This woman was running a low-grade fever.
The last time a nurse for an Ebola patient wasn’t quarantined for a low-grade fever, she turned out to have Ebola.... which caused a great inconvenience to the other people she came into contact with - on planes, etc. - who had to self-quarantine and/or worry about Ebola, too.
It makes sense to quarantine, just in case.
Now what is it about Obama's Ebola policies that make sense?
According to the forehead scan, she had a low-grade fever. But, she claims that her face was flushed at the time because she was angry about being detained - if true, that could result in an inaccurate reading from the forehead scan. Shortly after the forehead scan, her temperature was taken orally, and showed no fever.