How long would it take to go from Hawaii to Seattle by whatever would have been available if WND is right about newborns not being able to fly.
Look into BOAC...They had a flight from Mombassa to Glascow to Vancouver and often did mercy flights for free...If SADO was accompanied from a person who worked with new borns/mothers like a nurse of missionary, they may have allowed her to take the red eye the next day.
I believe Pan Am and United were the main air carriers from Hawaii to the mainland in 1961, thus contacting a retired employee might be of some use. Currently each airline has their own policy on newborns flying some 7 days some with doctors note and/or due date etc...
I did find a cargo ship that took some passengers to Kenya in the 60’s but could find no more info and misplaced the name.
That's actually easier, since the way is clear to follow the great circle route. At least up to the entrance to Juan de Fuca strait, where you go in, turn right for Seattle, left for Vancouver. About the same distance to either.
That's about 2400 nautical miles. So the trip would take 120 hours, 160 hours or 240 hours at 20, 15, and 10 knots respectively. If it's a liner, 20 knots might even be a little slow, so I'll also do 24 knots for 100 hours.
That's 4 1/4 days, 5 days, 6 2/3 days and 10 days for 24, 20, 15 and 10 knots respectively.