Tops/Sweaters with very long sleeves that partially/almost completely cover the hands have been (were ?) a fashion trend amongst teens/young adults for quite a long time. There are even tops that have a sewn cut-out in the sleeve for the thumb to fit through securing it even more to the hand. If the opinion is that ICA is "hiding" her hands due to guilt/not "liking" her hands, then cuff me 'cause I'm guilty of the same, LOL. I have several tops with those types of sleeves and adore them.
Also, as far as ICA "cocooning" herself by tightly wrapping her sweater (I have one that is below rear-end length and very loosely hung that I keep with me at all times) around her, guilty here, too...because I get cold VERY easily. Anything under 78 degrees and I'm chilly.
Are these statements made in her defense or to suggest that what the OP posted couldn't be the case, nope...just another perspective and MOO.