Thanks for the postings and supportive comments. I have been caring for my wife for 9 months now (metastatic breast cancer) and I am grateful to be her full-time carer. Her adult children (late 30's) visit every 6 months (for a day). Her son-in-law has texted her once in 2 years.
I suggested to the daughter in March that she might want to consider her priorities and visit her mother more often (she spends Christmas and holidays with her in-laws). I was rebuked by my wife for emailing her daughter and suggesting she visit more often.
I know blended families can be difficult - how can I manage my anger towards her kids? I seem to be a no-go area for her kids. My family is supportive and are also angry at her kids. They tell me just to ignore them but I often see the pain that my wife is in and it hurts.