Mandy, I think you are doing the right thing in assisting the Aunt. She's alone and quite elderly and needs all of the assistance she can get. Your man is too stupid to see what has been happening. He's so wrapped around the finger of wifey, he'll never get rid of the nose ring that she's pulling all of the time.
I don't blame you one bit....I wouldn't want to be in the middle of that mess. Can you just imagine how wifey went off on the cleaner?
Your X will be contacting your son again very soon. Right now, he's in the dog house with everyone else right now.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.