Friendship Breakup Tea

I had to end a relationship with a friend. It’s Been a difficult month. Yes, it was a month ago but it still bothers me. I have anxiety about it and my heart hurts. I came home from work and she was parked in the front. She dropped her dog off here and said she couldn’t take the barking and fleas anymore. She only mentioned the fleas at the last moment.. Mentioned her boyfriend threw out furniture because it was flea infested. So why bring that issue to me so randomly? I messaged her and was ignored. I messaged her boyfriend to have himself or someone come pickup this dog. Now they are pointing the finger at me and are saying I’m attacking them. lol… I observe people. I notice things in common when you put your foot down and create that boundary, you are the bad guy. -As she was here commenting on my kids looking older and growing, I noticed she really does not check in on me or my kids. She doesn't hang out with me anymore and such. But wants to dump her dog off here because she’s had enough of the dog. -I did cry because the dog was roaming freely in my backyard. And she said her only other option was to throw the dog into a shelter or pound. That is really sad to me for a dog someone grew up with. I don’t want to judge but for fleas? Take the dog to a vet and fix the problem. Clean furniture. That’s what I told them. She’s upset at me for messaging him in the first place like it’s the biggest crime I ever committed. Everything became a rolling snowball growing bigger of an argument when she came to pick up the dog. She started criticizing my home, told me to stop having sex with my husband to leave him??? , projecting a lot.. saying to stop letting my husband control me when he is not!? And called me miserable when I am far from that. I am just the bad guy for saying no. Maybe I care so much because it’s a scared dog.. My heart hurts. I expect better. Anxiety comes from expectations and I can’t help it.. My heart aches why