I'm in shock

Today my s/o and I were barbequing and our neighbor's sister walks up to our back deck and just invites herself into our yard. We have never met this woman in our life. So, I walk out with my daughter and s/o to see what in the heck she wants. She puts on a front and says that she's sexy as hell and she's 18 this and that. Let's start off with she's actually 39. Then she asks me if I have a car to drive her 2 houses down to get food to bring to our house. Um, excuse me.... then she starts talking crazy talk and asked my s/o if I was his hoe or his wife. He said I'm his wife and we have 2 kids one 11 and one whom is 2 and this is our house. She then proceeded to say something else and I grabbed my older daughter and walked inside. Before going inside she was confused and asked him if I was his cousin. She was hitting on my man in front of me. I had enough and texted him from inside my own home and told him to get her out of our yard. He walks in the house and said "can you make her leave" I was like "no, she likes you, you make her leave" so I go outside and she says "so are you going to take me to get the weed and food so I can eat with him or no"... I politely said " we are having a family dinner and you need to go." Just like that she was gone hopefully to never return. How in the world did I get so lucky to have some random woman on my deck who wanted my man. I mean I know he's attractive but jeez.. We have been laughing about it but holy cow I'm still in shock that this woman had the balls to even come in my yard.