I am being accused of stealing a purse that looks similar to someone elses that was stolen 8 mo. ago.?

Last june I had a daycare provider who's Coach purse was stolen the night before when she went to dinner with her family. I did not know about this until the day I went to pay her she could not find her purse at that time!! I went to her house to drop the kids off on Monday morning and she told me what happened. She said when she went out to dinner she had her purse but did not remember if she left it there or if she brought it home. She said she called the police but never heard anything. We kinda had a falling out and have not been thee since July. Last Sept. me and a friend went rummage sale shopping and I ended up buying 2 purses that day on that look similar to her's but it did not say Coach and the lining was not inside and it was pinned. I bought the purse for $5. Last week I went to pick my kids up from school she was standing at my car taking a picture she then said do you know what I have on here, I said what, she said a picture of my purse in your car. I said i bought that at a rummage sale. She said it's Coach purse and it's very unique. Well she then satingg coming towards me and attacked me I then got intostartingr an left. About 5 min later that cop s pulled me over and asked me if I new what this was about, I said yes probably the incident at school. He ran my licence and said I was good to go but don'tdisregardd the purse cause she says it's unique and that he saw the purse. He did write down that she did attack me and he saw the marks on my neck. He did not ask for the purse. I then went down to the police station because my neighbour said one stopped at my house. I asked to talk to someone about what happen. He ask me a few questions and took a picture of the purse. He asked me were i got it and i told, and that I have a witness to verify that i bought it at a rummage sale. He called her the next day in the morning and her a few question. On Monday the cop stopped at my house and told my husband for me to call him back. What should I do