My sister is abroad on a research project. She determines her own leave, but the terms of her grant require her to finish by the end of 2012. I haven't seen her for more than two years and she has not yet met my nine month old son. I offered to fly her over for his first birthday and she accepted so I booked tickets. She's now asked if the dates can be changed because they aren't convenient for her and because she's a little behind on her project - she wants to come 3 months later. This irritated me mildly, but whatever, it's no big deal. Then she asked if the flights could be booked with a detour so she can rendezvous with her husband (who isn't abroad with her) and they can have a bit of a holiday together. Which means she'll only be spending a part of the trip with us. I understand that it must be hard for them to spend so much time apart, and that there's a limit to the amount of time she can take off as well as cash available to travel, but that was their choice. My intention was for her to spend time with the family, not to subsidise a second honeymoon. It seems a bit churlish to feel so hurt and angry, but I feel taken advantage of and suspect that we'll hardly see anything of her at all.