Since it's a little kitten, you don't need big litterboxes. Maybe you can get some smaller plastic boxes at the dollar store, just big enough for the kitten until it gets the idea, then remove them one at a time.
Whatever you can do, what I would suggest is to collect a bag of dirt from where she used to go, and spread a handful or two on top of the litter for now. Try that before using all dirt. That might help, and you can slowly lessen how much until she's used to the litter.
Also, when you put her in the litterbox, take her paw and show her how to scratch a hole. In fact, scratch one yourself as she watches. She'll eventually get the message.
Please do not smack the kitten or roll it's nose in it. That will make things worse, and yes, as was said before, all you'll succeed in doing is to make her afraid of you, and MORE afraid of using the litterbox.
Cats are not "trained" to use the litterbox in the same way dogs are papertrained, or trained to go outsisde. A cat buries its business instinctively. If they're not doing it, it's better to find out the reason why and changing it, rather than just teaching them "bad!"
Don't forget if you do see her using it, or she uses it when you put her in there, give her a LOT of praise, pet her, make a big deal about it, even a treat. You know what they say, you get more flies with honey than with vinegar.
My Rockette (at about 4 1/2 weeks) was the first of her littermates to figure out how to use the litterbox. She had gone in there, dug about 10 holes (they all had been digging for days), but this time she sat down and actually went!
Not only did I praise her big time, I started doing the Rocky! Rocky! Rocky! chant and doing happy dance myself, clapping and saying Yay! What a smart Kitty! lol She got so excited that she rolled over on her back right in the litterbox and started kicking her arms and legs around to join in She was so funny and cute. But, knock wood, haven't had a days problem with her using the litterbox since, and she's 9 months old now.