First of all, I know IABU. It's more a question of HOW unreasonable.
My young DS is autistic, non speaking and has a severe learning disability. Meltdowns are triggered by sudden changes like adverts on the TV. Neighbour diagonally across street from me has very large windows and an ENORMOUS TV. Never shuts her curtains/blinds so DS can watch her TV from our house and fixates on it when his own tablet is removed before bedtime.
Every. Single. Night. It's meltdown when adverts appear on her TV. Obviously I shut our own blinds but he knows her TV is there and just opens them again, or he will go upstairs and hyper focus on her TV from my bedroom window.
How horrendously unreasonable would I be to ask her to close her blinds for half an hour at night just to avoid this nightly hysteria??! I'm at my wits end with it.
YABU - absolutely unreasonable. It's your child's disability to manage.
YANBU - you can only ask and see what she says.