Seriously?

I feel like I'm under attack. My "best friend" I use that term in quotes because she doesn't act like it sometimes, told me today that her inner ear infection was because my dishwasher broke down a few weeks ago and there was water in it for a week, well since then it's been drained and ran on high heat mind you, several times. She told me she has antibiotic resistant strep. This hasn't been diagnosed by a doctor. This was her own diagnosis. So I don't let this bother me, I apologize, she sends me a text that says that she doesn't think I know how to disinfect anything or that I even care to. What kind of bullshit is that? So rather than playing on the defensive I just let it blow off. Ok not really but I'm not in the mood for this to escalate to some sort of major drama. So what it boils down to is that her being sick, which has NOT been determined why, is my fault because I'm a filthy unsanitary person. If she really thinks that then why does she come hang out and use my dishes? Why is it that no one else that used the dishes in the dishwasher last week got sick except her? This includes my mother in law, step father in law, and grampa and and AND the kids and Rex? Why do none of them have strep or ear infections? Doesn't it seem strange to you that no one else has any problem except for her? Call me crazy but it just seems to me that if my dishes were covered in some bacteria that everyone that used those dishes would have gotten sick. Dont you think? I'm just not about to deal with this , not like the last time she blamed whatever was going on , on me. I think I just need to take a step back and not talk to her for a week or so. It's just really insulting that someone who has lived in your house (rent free) uses your washer and dryer on a week to week basis, sometimes the detergent as well, comes over to eat here and there, and you drive everywhere they need to go without complain, wouldn't say shit like that. If my house is so freakin unsanitary then why would you come over here? Is my kitchen a mess? Sure it is. I spend most of my free time doing homework and chasing Ethan around trying to get his messes cleaned up, I buy paper plates. I was pots and pans, but I still have a sink full of dishes. There is no secret there. Would I like it to be cleaner? Sure I would but until I have a little more free time and a properly functioning dishwasher, that I don't have to wash everything in it 4 times to know its clean, don't criticize my house when I know your house is just as freakin bad. It just makes me want to be really bitchy and do things like shut off her cellphone that she talks to her husband to everyday on that is on my account. I have enough shit on my plate being pregnant, going to school full time and being a full time mom that I shouldn't have to worry about the rest of the world as well. She got mad because I had a HUGE migraine the other day , not a headache, those are tolerable, a migraine and yeah I was bitchy and pissed off that she wanted to go to the store and then took forever while I waited in my van in excruciating pain, all I wanted to do was go home , put Ethan to bed and try to sleep through the pain. Did that matter to her? Hell no. She took her sweet ass time. I know you're thinking I should just cut this person out of my life. I probably would if I hadn't known her for 20 years. If I didn't owe her a ton of money. or if she didn't move here just to live near me. I have a huge guilty conscious about the money and her moving here and it is what drives me to take her places when she needs to , plus i feel responsible for her van not running even though it turns out that what's wrong with it has nothing to do with the minor accident we had in it. I still feel responsible if she needs to go to the store or get prescriptions or get movies or anything. I just know that if I see her later she's going to act like she didn't say those things to me and that they didn't hurt me. I am sorry she's sick, I'd feel even worse if it was because of my dishwasher but blaming me before a doctor gives you a diagnosis doesn't do anything but drive a huge wedge between she and I and I end up walking around with a huge chip on my shoulder and let me tell you , those bastards are heavy.