My in laws became a childcare bubble for us during lockdown and had the kids overnight twice a week due to my work schedule (I start at stupid o clock in the morning and it seemed daft dropping them at 6am on the two consecutive mornings I have work) but then both me and husband work real jobs, me being a key workerEven if she was a childcare bubble, I was always told it should be dropping the kids off and not having contact with the person. She shouldn't be sat on her stairs larking around trying on shoes
That and they both work from home so not out gallivanting breaking rules, which clearly sofa and co do