A police investigation shouldn't be a big concern--you have a jury to protect you if you're not guilty. Hate speech has harsh penalties, so if they find the culprit--your WW, AP, one of their APs--they're in for it. You seem very interested in events--even doing your own mini-investigation by asking your D--but this is your WW's roller-coaster. As much as you can, let her ride it, while you do your own thing. Being very interested and very defensive could even look suspicious compared to leaving it at, "No, it wasn't me." if asked.
sorry hate sh*t being thrown at me and especially when i didn't do it! only asked D just in case, didn't think for one moment it was her.
i have my own theory where it has come from! but if i get asked it will be it wasn't from me! i am not going to be doing her detective work for her - its her problem not mine.
i do not have to answer to her, she is a WW living away from me