Congrats on your puppy. My advice to you would be to stop waking your puppy up to take her outside to go potty. If she is not having any accidents then there is no reason to wake her up to go potty. Waking her up to go potty in the night is actually teaching her to wake you up in the night to go potty. At 14 weeks old she can hold it through the night. My puppy was 13 weeks old when I brought her home I never had to take her out in the middle of the night. Really early (like 6am) to go potty but never in the middle of the night. Take her out right before you go to bed and as soon as she is out of her crate in the morning. Letting you both sleep through the night will help you be more rested.

I agree she should not have free run of the house. She should only be free where you can see her. They potty quick at that age. She should be giving you some sort of signal my puppy would sniff the parameter of the room, or sniff the door. I knew that meant it was time to go out. Make sure you are giving her a little time ( 30-60 seconds is fine) outside after she potty's so that she doesn't give you any false alarms just to go outside and play.

Does she know how to use the doggie door? What you could do is help her to learn that is what the door is for and in the morning, when you know she has to go potty lead her through the door and then to the grass to go potty give her a treat and lead her back into the house through the door, this will help learn what the door is for.

A great book for learing about puppies, how to train them, potty train them etc. is HOW TO RAISE A PUPPY YOU CAN LIVE WITH. You can buy it from Amazon. It tells you what they are capable of at what age, etc. I learned so much from the book it helped.

Good luck, keep us posted.
Gina