Hi there is no reason that pup cant go out in your garden,im surprised your vet didnt tell you that.paper training at this stage is not a good idea it can be very hard to get them out of it.As long as he has no contact with unvaccinated dogs she will be fine,biting and chewing is normal,she`s probably teething,get her some chewys.And make it clear that biting you is not acceptable,by saying no firmly.