I'm a blue eyed blonde, and so is my daughter. Have to protect that skin!
Yes, you blondes with those baby blues do seem to have fairer skin. One of my daughters-in-law is a blonde and she burns quite easily. She can't seem to get a "good" tan, she gets more red (more than she likes)
That's odd for a blonde.
Most extremely light-skinned
Germanic/Slavic blondes with blue eyes tan beautifully.
When I was a young and living the life of a beach bum, I tanned to the color of a horse-chestnut after a few weeks in the sun as did all my other blonde haired blue eyed relatives and chums.
You sure your daughter-in-law isn't Celtic?
A fair number of those poor sods never tan.