My sister did my ds a huge favour about thirty years ago, and for this he, and I, will be forever grateful. We have done many things over the years to show our gratitude.
However, she likes 'free' holidays and has a habit of inviting herself plus dh, to stay with any friends and family who live abroad. I've found out that she's been talking to my other siblings about visiting my ds who is married and lives abroad. His wife comes from a culture where hospitality is taken very seriously, and I know that my son would never say no to his aunt.
The dilemma is that I know ds and dil will soon be spending £££ on IVF treatment and my sister doesn't put her hand in her pocket when she and dh visit anyone. I feel bad that I don't want my sister and bil to make my ds feel cornered into agreeing to an inconvenient/unwanted visit.
I have tried to drop hints to sister about booking a tour to the country in question. Is there anything else I can do? I also don't want to upset my sister.