I think we were in the right place, but wrong instance. We were doing the daily one. We should have been able to beat it any way, but we just do not play enough together to get smooth.
There will be a lot of these kinds of things ahead, plus solo only kinds.
Family
It hasn't gotten any better today. I tried to take Dragrd to the same instance, but for some reason, he. Can't get it. So I tried a similar one set at level 50. He is 75 and should have been able to handle it. After three deaths I switched to Kuur who has some epic skirmishes to do...died twice. It must be me. 

Karma is a Bitch...thanks Ten
This walk-through says that we need to kill the tomb guards first so that they don't keep healing the boss.