My sister lives near us with her two children. Her husband works away from home - usually, but not always coming home for the weekend. She has two small children - 1&3 - and lives in a remote location. Is it ok for us to bubble with her for outdoor walks or not? Obviously not at the weekends, when her husband is around. (To add to the complications, it’s not always clear until the last minute whether her husband will be able to travel home for the weekend.