My friend and colleague is a care assistant and I'm a qualified nurse. Today, during handover, she suddenly started having a go at me saying that the nurses don't understand how hard it is for the carers because we're doing other things.
The thing is, I do know how hard it is because, at my last job, we were chronically short staffed and the nurses had to fill in the gaps as well as doing their nursing duties (paperwork, drug ordering etc.)
She often asks me for practical help when I'm perhaps doing the notes or something. I don't mind and I'm not one of those types who just sit on the computer all shift, but I am responsible for 30 residents, staff, the building etc. and it's demanding work.
I think she resents me for just doing my job. I worked so hard this morning and got a lot done, then she just launched into me as though I'm some kind of rookie who doesn't understand how hard the carers work. I've been qualified for 20 years, so certainly no rookie 
I feel guilty for being qualified and not having to do their job, but my job is difficult, stressful and demanding too.
Should I just bite my tongue and sympathise, or stick up for myself and my role?