[Thin Lizzy]

What kind of blanket is it? I wouldn't recommend using them.
Because you removed the blanket, you've taken away her smell, she will have marked it and for you to take it away she's feeling a bit nervous/scared.
You should maybe go back to the start and try the tissue trick, by leaving it up your sleeve for a couple of hours or more, then placing it in her cage, she'll sniff it through curiousity and probably shred it up and use it, this let's her get use to your smell and when you do put your hand in her cage rub your hands on her substrate. Speak to her and encourage her and praise her.
Then start introducing treats to accept from your fingers and if she does praise her and tell her what a good girl she is. She just needs to get use to you and trust you.