Yes happiness - I’m contrary like that. 
To be fair Cyrell wasn’t there wheni in her brother played the get out of dodge card. Yes she should have stuck up for him at the table but I think the family dynamics were all wrong and I’m not sure it wouldn’t have inflamed the situation. For both of them 
The writing was on the wall by that point too. They both knew deep down it wasn’t happening but neither wanted to end it.
She absolutely should have stuck up for him and I know I thought it and I hope I posted it!
I don’t think Cyrell is bad - just a bit broken.
Marfa is not nice. What she has said about Cyril has been shocking. And to consider pouring wine in her proved it wasn’t a flash of temper. She absolutely wanted to humiliate her. And planned it.
Nic absolutely should not have fannied after Marfa.
And Michael should’ve really called Marfa out on that.
Besom that she is 
Perhaps if they’d (Nic and Cyril) both stuck up for eachother when it really really mattered, they might’ve stuck. Who knows?