I had the same problem with my male doberman as a puppy. Just continue socializing like you are doing. Act calm and secure in every situation and don't overeact. I found it simply does not work when you force a puppy into anything (I'm not saying you are but I tried and learned it doesn't work
) My dobe slowly got better and is especially great in the house. Outside the house he is o.k. When company comes over, if they force themselves on him he tends to shy away. I tell people to sit and he'll come check them out on his terms and is great afterwards. Have your friends offer little dog treats when they come to visit.
Your pup follows you because she sees you as her pack and looks to you for security. Pic a comfy spot central in the house such as the living room, and train her to lay down and stay. You can let her follow you if you want, but if you don't want her to use the "go lay down" command and lead her continually back to the spot if you have to, to get her to stay.
Caretaker of 2 dobermans,, 1 schnauzer, 5 cats, 3 goats, 1 parrot, 1 bearded dragon lizard, 11 chinchillas.
Rest in peace, Cricket, Casey, Bella, Yank, Chloe and Bones.