My FIL lives abroad with MIL. He has just been diagnosed with cancer and has been told he will need chemo. They had already booked to come and stay with us over Christmas. Of course I have no issue with this but given the circumstances I'm anxious about him coming, whether that be if he picks anything up while travelling or him falling really unwell while he's over here and ending up in hospital. I'm also worried about DC seeing him unwell and it upsetting them. I don't know what to say to DH.