The hospice nurse or your wife's doctor can explain this to you better but there are other ways to insert a catheter to remove the urine and although it does require creating a small hole in the abdomen to get to the bladder. It is called a suprapubic catheter. I can be placed by a urologist as an outpatient procedure or even in their office if set up for this procedure.
Hospice is palliative care - relieving her of urine in her bladder isn't considered lifesaving or even life prolonging - it is more of a comfort and bodily function measure so getting something else done for this problem is fine.
Again, talk to the hospice nurse and/or the doctor - the hospice nurse when they are changing the foley will know if something else has to be done. If the foley is working now, then that's good, everything is OK and you can spend some quality time with her.
Day by Day . . . . . . Moment by Moment . . . . .
It's Always Something . . . . Roseanna Roseannadanna