I have OCD, and I believe to a degree "tourettes", but many of these things manifest in unusual ways. It's not always textbook (Im an RN as well). As an example, when I was younger I would get very strong compulsions to make these "growling" type sounds every once in a while. I'm sure she is aware of it but it is nearly excruciating to ignore the ticks when one is starting. I have somehow grown out of most all of my ticks and am fairly "normal" now. I get it though, the thought to hum is likely all consuming and will drive her frantic if she doesn't complete it.
I have OCD, and I believe to a degree "tourettes", but many of these things manifest in unusual ways. It's not always textbook (Im an RN as well). As an example, when I was younger I would get very strong compulsions to make these "growling" type sounds every once in a while. I'm sure she is aware of it but it is nearly excruciating to ignore the ticks when one is starting. I have somehow grown out of most all of my ticks and am fairly "normal" now. I get it though, the thought to hum is likely all consuming and will drive her frantic if she doesn't complete it.