I was desperately worried yesterday morning and felt that circumstances were beyond my control. Since then, I have had posts to say that she is responding to treatment and reassurances that she is in the best possible place. My financial circumstances are such that I cannot always act as I would prefer. I feel sure that if she continues to make progress, even slowly and with setbacks, she would prefer me to wait until the planned meeting at the end of this month, even if that has to be curtailed.
If I went now, I could just be an added burden to my son-in-law, who has enough on his plate just with working and driving 3 hours each way to visit my daughter. Also, I don't know him very well: they married in the States and have only visited us twice for very short periods.
Thank you all for your replies.