DD (4) has a best friend who lives next door (also 4). They attend the same pre school and see a lot of one another. Recently DD's friends mum had a new baby and DD's friend has taken it really badly. Her mum says she is intensely unhappy and explosive and DD often tells me that "friend cried all day at nursery". and "hates the baby". Has anyone experienced anything like this with an older sibling? I'd like to help but I don't know how. The new baby is 5 months. I know the pandemic has been awful for all but really the girls haven't been overly affected afaik - neither of us have family nearby or grandparents that visit that they would be missing. Nursery has continued. She was fine in the first lockdown. What would be the sensitive and supportive thing to do? Or should we all just batten down and trust that she'll come good in time.