I've seen 3 threads today where the letter G has been included in this anagram. There's either a compiler error or there is a common mistake solvers are making
Could be
A quinzhee or quinzee is a shelter made by hollowing out a pile of settled snow. This is in contrast to an igloo, which is made from blocks of hard snow.
But I don't think it helps
The crossing letters are I-L-O- (6 letter answer) for arctic homes .
Must be igloos .It's obviously a printing error .I can't see where it matters though if all answers are correct otherwise and it has to be Sophie Raworth.
They probably shaded the wrong letter for the anagram of her name and should have shaded an E elsewhere instead of the G in igloos .