Let me guess.  She's a flight attendant.  Probably Alaska Air, although Delta has a presence at SEA also.  

It took about 10 seconds to find

Washington PFML is a state-mandated insurance program designed to provide paid leave to employees to receive or give care. ... Benefits began to be paid out starting January 1, 2020

Meanwhile, TAFB seems to be an airline term for qualified per diem under an accountable plan.  

Anything in Box 14 is just useful information with no real tax consequence, except for some of the local taxes that may be deductible, like CASDI.