From time to time we have disagreement and she storms off. She says she doesn't like confrontation as her parents fought during her childhood so she uses these avoidance tactics and is hypersensitive to the smallest of criticisms.
We have been NC with my parents who live locally to us-I will admit they have not treated my wife well in the past. A big clash of cultures and understanding was to blame in many instances but unlike me DW finds it incredibly hard to forgive and forget and even the smallest thing would get blown out of all proportion. My parents have made no secret of the fact that they didn't accept DW and neither attended our wedding and she will not back down and claims to have been "conditioned" by all of us. fact.
My parents are very socially awkward, speak their minds and they are snobs but they are not bad people.
We've had nothing to do with my parents for the last 6 years now after DW intercepted an email written about her which wasn't very complimentary.
I was most upset to see that my father is suffering from ill health now and putting my mother under much stress. They both turned up at the house unannounced and we were not in during my son's birthday last month -all they wanted to do was to see my son. My wife found this out from by brother (who was indiscreet and joked with DW that our mother probably was after a carer for my dad) and my wife went mad. She went on a epic rant about calling the police if they were to dare turn up again -and she didn't speak to me for a week.
I feel now that my parents are frail and elderly they need a supportive family around them. They're not perfect but they're the only parents I have-they mean well and don't have the most sophisticated sense of humour but they're not malicious.
AIBU to tell her I'm going to take the DC and start up regular contact with them again?
I'm not sure I could cope with any more moods. In the past I've looked elsewhere for emotional support and can see that happening again 
if she doesn't change.