belgian pup

hi my name is sarah have a belgian shepherd pup of 11 month first time owner shes a groenendael but but would like some advice shes called romany and lives with my 7 year old gsd but cant seem to get her out of been so protective shes not a lover of strangers and trying to get her more use to people any advice on how to do this always had gsds and not had this issue but romany will walk past people but wont allow to approach her any advice

My puma is 9 months and she loves strangers too much, she's the opposite and maybe too bold. I try to expose her to as much as possible, maybe that will make your pup less shy. I take puma to as many places as possible and now she loves getting in the car and going to new places. Try that and let me knowing it helps.