I do feel bad for her as she clearly hates any change or challenge. She’s been in the same job half a life time and rarely does anything independently. If she outlives both Chris and her Mum she probably wouldn’t even be able to change a light bulb or submit a meter reading
I've seen this with older couples.
After a bereavement you hear how one partner did everything in the house. They organised the finances, utilities, holidays, practical day to day stuff. They remembered birthdays, planned Christmas and social gatherings/activities. You get told they both watched these programmes, ate this food, went to bed at a certain time because that's what **** wanted to do. It wasn't being controlling or dominant, it just seems that's how the relationship worked out and both partners seemed happy. Of course if that partnership ends, then one of them has to learn how to deal with all this stuff, even have to make their own friendships and social life.
I agree that Emma needs to become less reliant on Chris and her mum.