Lord, it is tough to keep up with this thread.
I think we all bring our life experiences into this. I find that I was very triggered by Randall's manipulation of Rebecca on many fronts. For one, I strongly believe in the right to self-determination, particularly around personal medical decisions. There was no good reason for Randall to callously force his ailing mother's hands in a rather cruel way. Emphasis on ailing mother. All so that he could feel better about having done what he felt was needed. SMH. I get that he has crippling anxiety, but there are better ways to handle that by working on himself, rather than what he chose to do. Having a mental illness does not give him a pass in my book--this was extreme for me. How can he be so sure this study would even work? The whole purpose of it is to test whether or not a treatment would work, it's not a given. So he is ready to have his mother uprooted to an unfamiliar place, minimizing her support system, for selfish reasons. Yes, Miguel is coming along. How nice. Living with a dementia patient is not a one person job (well, maybe now that she is newly diagnosed it may be). But the point is Miguel won't have the access to trusted caregivers at the drop of a hat--they would have to take a plane from any direction to get to them. What Rebecca can benefit from is a familiar and trusted environment, to minimize the confusion the disease is already causing. I see it when my mom has a change in her structure--she decompensates whenever there are changes to her environment, or even going to spend a couple of days at my brother's house. And that's her son, that she loves dearly. Randall may be thinking that he has his mother's best interest at hand, but he did all of that, for a research study. Not proven treatment, not a cure (there is none), but a 50/50 chance at maintaining good functioning for a little longer. She is going to progress in her illness and eventually die, regardless. He has to make peace with that. The cruelty of how he treated his own mother is why I can't be on team Randall. Doesn't mean I don't want him on the show or think his character needs to be written off. The fact that we are so fervently discussing every minute detail of this goes to show the great job he is doing, along with the rest of the cast.
As to the fight, they were both total jerks to one another. I see that as separate thing that was less about Rebecca and more about their relationship. I don't think there are any winners there. You don't hurt a loved one like that and push the most painful buttons just because you disagree.
Whew! For it being just a TV show, this sure brought up a lot for me.