Obviously you messed up someplace at the beginning of the relationship.
You need to get "Hand" back.
This might be hard on you for a while but go ahead and [size=10pt]"Cut her off"[/size].
Been my experience that they absolutely hate this.
After a couple of days they will start to mess with you, but eventually, they will break.
Never took more than a week by the way.
After denying her for a week or two she'll be so insecure about herself she'll be begging you to come to bed.
This is your prime opportunity to play hardball and force a ditching of the puke looking blanket.
You can do it!
You have our support.
Plenty of hot naked women on the internet to get you by for now...and they won't force you to cuddle with a nightmare.
Oh yeah...Don't blame it on the blanket.
Just make up excuses like "I'm tired tonight, or I have a headache"
Drag that on long enough and she'll start to think something is wrong with herself.
She'll be crawling in her own skin.