she has weathered such storms before - but the sad thing is that the eggs are likely not viable having gone beyond normal hatch parameters. we’ll see if her survival instincts lead her off the nest.
Snow is a great insulator, so she will be fine and if her body temperature stays up those eggs will be tucked in the warmest crevasses of her body. I have never figured out why nature has birds of prey mating and producing young at this time of the year.