How do I stop neighbors from trying to take advantage of mentally disabled friend that I take care of Legally.

I Legally have to manage the finances of my friend who is mentally disabled. She is still able bodied she about 53 and when I met her I thought she was older because of her mannerisms. I helped her get away from a physically abusive relationship almost 3 months ago. I also helped her regain access to her finances. Remove her abuser from her lease and bring her place up to code for safe and clean living. Now that her neighbors noticed that she has more freedom. They have been calling with very nosey questions and due to her disability she literally can’t stop her self from honestly answering questions, which is cool if it’s in the right hands. The bad side is she will give out her social, her passwords, she even told people how much she is receiving. I try not to be over bearing but I already explained to her that she shouldn’t tell people her important details because they could scam her. She can’t really remember that I told her that and then she will do it again. There’s a crappy neighbor guy who clearly can see she has a disability and he will call and ask her personal questions about the ex being gone and if he’s coming back and even heard her tell him how much she makes. It’s like people are trying to prey on her. She looks at me as a overbearing annoying parent now. I’m just trying to protect her. Is there anything I can say to the neighbors that is non threatening ? Or should I get the police involved. ? Cause this lady is a handful, and if I’m not able to stop people from taking advantage or if it affects her finances I could get in trouble.