My DD's are 4 and 6 yrs. We live away from the UK but only about 1hr flight away. My MIL has an expectation that we should let our duaghters fly alone to visit her in the UK. I am horrified at this suggestion.
My DD's are not confident on planes and the thought of them being alone with a stranger (cabin crew chaperone) who may distracted at any given moment fills me with utter dread. Also flights to and from where we live are often delayed or cancelled.
Am I being unreasonable in refusing to let my small children fly alone?
I have taken them over and dropped them off to stay with her while I go and stay with friends or family but she seems hell bent on them travelling alone ( I think she sees this as giving me a break). My MIL thinks that I am being controlling.
My husband and I just think we are being a good and caring parents! 
Any constructive comments are gladly welcome :)
Thanks :)