It you just got her yesterday then she is very much still adjusting and I would not panic yet. I think you are expecting a lot out of a puppy you just got a day or so ago. What sort of potty routine did her breeder have? If she was still going potty in the house that may be why she won't go outside. I know when I picked up Finn at 8 weeks my breeder told me the pups were being taken outside to potty, which made things easier for me. If you take her out and she does not potty just pop her into a crate for 5-10 minutes then take her back out, keep it up until she potties then praise and reward. If she hasn't pottied don't give her free run of the house. I crated or put Finn in an ex-pen when I wasn't watching him, it gave me peace of mind knowing he was somewhere safe, and it gave him clarity in that all the things in that environment could be chewed on and played with. I gave him supervised time around the house after he had pottied. I don't give young pups free run of the house because it only take a minute of distraction for them to wander off and have an accident or get into something they shouldn't. They don't know right from wrong yet so I want to make sure I am right there watching them every second to make sure they make the right choices. Giving free run is asking for them to learn bad habits like pottying in the house, chewing things, ect... It is nice to have a little pup following you all over, but the downside is them going off to potty, or chew, or swallow something when you are distracted. I don't like pee pad unless they are necessary. I think it can be confusing for a puppy, yes you can pee and poo inside, but only in this spot otherwise I get upset.
I wouldn't drag her, this is not going to make being on the leash or going out to potty a good thing. If she will follow you around just leave her off leash or let her drag it. Praise and reward for her following after you, keep it light and fun, she is a baby and just had a huge change in her life. She is probably confused and more than a bit unsure. Give her as much clarity in her life as you can, and set her up in an environment where she can't make wrong choice.