She loves Henry because he can't talk back, he does no wrong, he doesn't 'mess' her perfect house up like kids do, he screams at her when she's been gone 2 minutes and makes her feel loved, needed, wanted, something she doesn't get (nor does she want) from her children.
She's a disgrace, while he's getting more exercise there.. It's still only laps around her garden. It's not a walk. He'll get bored of that garden once they're there full time and he'll go back to being depressed on the sofa. They don't work, there's 2 of them who are unemployed, Henry should and could be walked twice a day, morning and evening for a good amount of time.