My friend has said she'd like to spend a weekend over at my family home with DM, me, her, wine, board games and some movies like we used to as young adults. Whilst I don't mind this for my friend, I'm sure she has stuff on her mind, I find my DM exhausting. I wondered if it was just me but DH said the same and actually said he wouldn't put me through having to go to see DM on my own recently. I see DM for my DC at the moment and because she doesn't tend to do much socially. However, DH and I were talking and the older I get I feel she's a narcissist and always has been, DH has never uttered a bad word against her but has actually mentioned this of his own accord now too. I feel like I either apologise for her a lot of the time or try to tell her what she's like to others and how it comes across only to be met with with her telling me I shouldn't be rude to her.
Do I warn said friend about this? If so, how do I tell my friend that whilst I am happy to go along with the plan, the good old bits of DM are barely there?