Oh yeah, I've got a little handful too. Don't know why, but fillies always seem to be a little more resistant at this age than colts. Pick one corner or area of the stall where you work with her. Make it consistent and do the working in there as much as possible. So, you send her to the corner (kind of drive her without a lot a pressure) and then when she's there, pet her all over. Scratch her butt with your nails, I've never met a foal who didn't love butt scratches. That's her reward for being good AND she'll teach herself to stand still for a scratch. Then after petting all over fora minute or 2, then slide your hand down her leg to her hoof. Don't try to pick it up at first. Once that's no big deal, just lift it off the floor a tiny bit, doesn't matter if it's how you would pick up a grown up horses hoof, just take the weight off a little, put it back down. Lots of "Good Girl" praises.
For the blanket, I just follow the foal around the stall opening and closing the velcro, until she gets tired of moving away from it and stands. Then I quit, say good girl, move her to the corner and put it on. For off, I just take the belly band and pull it down a little, close it, pull it down, etc etc, in the work area until she stands. Then I take it off and praise. Repetition, repetition, repetition. Take your time and keep your sessions short, no more than 5 mins. You can do several 5 min sessions in a day.
For me, at this point, mouthy is no big deal. They have no hands & fingers, their mouths are the only way they can learn about things. I let them mouth and lip and lick until they figure out what they're trying to learn. As they get bigger and the teeth come in, I just push the face away and say, "No" and keep on going. I have found that if I take my time and let them explore all over me now, they don't feel the need to keep on doing it when they have teeth. Of course, there's always that ONE, but it's usually a colt, LOL!
The pawing is a no-no but not a huge thing right now. I usually have a ball cap on (what brush hair before morning feeding?), so if they want to 'play strike' at me, I take off my hat and chase them for a few feet, waving my hat and telling them, "No". A couple of times being chased usually sorts that problem right out.
When she gets sassy and tries to hike her hiney at you, and she will, take off the ball cap and pop her on the bum (so it makes a loud snap sound) and tell her "No" and send her out of your space for a couple of minutes. Watch this mare teach her colt about disrespect.
https://youtu.be/oJGvvry0yXk