My sister just truly spit on me

It was just a reflex so she didn’t do it on purpose but I still truly hate her. I was on the sofa on the laptop working and she came to sit on the other end of the sofa and she then truly coughed truly hard and then a big glob of spit came on my back. I’ve just been truly sick to my stomach for a few days but I had to go to work and I just didn’t even say a word because I knew she would just deny it and tell me I was lying.