My SIL (who I am close to) has a 4mth old baby and he is quite difficult, he cries a lot and likes to be carried and cuddled most of the time. She is always telling me she has been crying about this, that or the other and I feel she is on the brink of depression. I had it after dd so I kind of recognise the signs. I don't know whether to sit her down and talk to her or just leave her to deal with it as she sees fit. I don't want to seem interfering but I love her so much and it is upsetting me that she seems unable to cope. What should I do?