Sketchy Neighbor

This lady moved into my neighborhood last month and she has been very sketchy. She is overally friendly to my kids. She tries to hold conversations with my two teenage sons and invite them into her house. At first I thought maybe she's lonely, but she just got more weird. She started offering bags of candy to my 9 year old twins(boy, girl twins). They know better than to take candy from strangers. My kids were playing outside while I was at work and my 15 year old son called me saying he had to bring the twins inside because the neighbor was taking pictures of them. I confronted her when I got home and she said she wasn't but she wouldn't look me in the eye and shrugged me off. I noticed some sketchy men in our neighborhood and my teens were walking home from school. They were at that lady's house and she talking to them and pointing at my teens. I don't understand what reason she would have to be pointing at my teens. She then started talking to me more asking if I ever needed a babysitter or if my kids could come over to her to play. She tried to get my teens to come in her house to help her reach something. I asked her to stop talking to my kids. My other neighbor came to me saying this lady was taking pictures of all four of my kids. I knew confronting her was pointless because she will just lie about it. This women is being sketchy as fuck and I'm wondering if I should get the police involved, but idk what they can do