Namechanged just in case!
I am a SAHM with 1 DC who is 2, so have no childcare and have never needed to ask SIL for help before. About 6 months ago my Mum ended up suddenly in Intensive care and my DH asked my MIL and SIL if they could help out all while I was obviously at the hospital and going through the most horrendous experience of my life. MIL said yes and managed a few 'sessions' while I was at the hospital
However, SIL is also a sahm and was 6 months pregnant ( no complications) and had a 3 year old DC herself. She said no as she thought it would be too difficult to look after 2 children.
I was really at this as I have looked after her DC on a number of occasions which isn't really the issue ( just elaborating) and thought that when times were desperate for someone you would want to help out. So on top of the nightmare of my Mum being so ill I had to try and work out how I could fit in visits and also felt really let down.
Fast forward to now and I have been asked to look after SIL DC while she goes shopping! I am happy to do this as I want to see the children, but can't help feeling upset with the one way street and wish I could just let it go.