Easier, more pleasant I dont know???

I just received a note from a casual friend from high school saying looked like I was doing good and how was I, I know that she was sincere as she was always a very sincere and honest person that is what made her who she was. but she had asked me on face book very casually and I figured if she had not seen all of my posts about my struggles with Lupus well then I did not want to be negative. SO I replied back just asking how her father was doing and said she looked like she was doing well. I did not bring up Lupus, as i did not want to be Negative and be a buzz kill, I feel like I am a buzz kill.