By teaching her it�s ok to go on the paper, you're making it harder for both her and you. She doesn�t know the difference between a papered floor and a non-papered floor. I don�t know why these �pee-sheets� are even sold!
Take her out on a lead (that the very important part!) into the garden, after she wakes up, after feeding, after playing, and when she shows any signs of wanting to go (circling or sniffing at the ground, for instance). You need to watch her to pick up her signals.
For a 14 week old puppy, I�d take her out on a lead into the garden every couple of hours. Don�t just let her out � take her out on a lead.
When she�s weeing outdoors, tell her �be quick� or �wee-wees� or whatever you want to call it, and when she�s fn full flow, give her lots of praise and a treat. Get really excited about her doing it right and she�ll get the hang of it.
If she wees indoors, its not her fault � its yours for not seeing her signs - so don�t blame her. If you catch her at it indoors, pick her up with a �ah-ah�, put her tail between her legs, and carry her outdoors to finish � on her lead. Keep praising her good behaviour but ignore the bad.
And keep doing it � you need to reinforce her good behaviour. Don�t assume that just because she�s been doing outdoors for a day or two that you say to yourself that �She understands now � no need for me to keep training her�. Believe me, it doesn�t work!
A crate is good � but don�t use it as a punishment. The longest you should leave her in the create is 4hours maximum. Its unusual for a dog to mess in the same place that they sleep.