Re: Wini is very protective, even as a puppy.
Don't worry about "taking away" her protective instincts. A solid, stable, loyal adult dog will protect you, but she will be able to discern what is a threat and what isn't. And at that stage, she'll also know what an appropriate reaction is.
Right now, you have a pup that is unable to discern threats. Puppies are unable to do that. They're puppies. Unusual things scare them and they react by overreacting, unless given leadership that shows them that they have other options. That's why, as the others have noted, she needs training, and socialization, and a lot of it.
The more we let our dogs explore the world -- safely and with us at their sides to protect them -- the more they learn that the world is basically a safe place to be. They learn to understand that shadows are just shadows; strange-looking people (people who don't look like their owners, or dress like them or smell like them or sound like them) are just other people on the street, because they meet people like this all the time as they go through life. They learn that people knocking on the door, kids on bikes and skateboards and the people in uniforms that bring by packages or who look in our yards (meter readers) are people to be tolerated (or sometimes, they're our friends because they bring us treats!).
After about 1.5-2 years, our puppies will have nearly adult brains. If we've done our jobs right, they'll have experienced a whole lot of everything. THEN when someone that's hinky walks up to your door, or is following you in the park just a little too close, Wini will KNOW this person is a threat -- not because she is afraid but because she has a database of what should be expected from people and situations and what isn't normal.
Let's not expect Wini to be "protective" at this stage. Let's let her be a puppy. Let's get her into training. Take her places. Show her the word is safe and good. You protect her.
In time, she will be a phenomenal watch dog. But just because an 8-year old child thinks he can drive a car doesn't mean we should give him the keys. Wini isn't ready to have the keys, or even sit in the front seat. She needs to sit in the backseat, and do a heck of a lot of observing while YOU drive all the time for quite a while.