I know this should be fine. Grandparents want to see the grandchildren to celebrate one grandparent's birthday. I can't go due to work, so they are now asking if DH will take my four year old DD without me (DD2 will stay home with me). Thing is, it will be an eight hour plane journey there and back in DD's first ever half-term after starting school in September, so I genuinely think that it will be very tiring. It's for a week which is quite a long time for her to be away I think. But mainly I just don't feel OK about it. I actually know that I am being unreasonable really, as the main problem is ridiculous scenarios about planes falling out of skies and stuff like that. I guess I have to say yes, don't I?