Can the insertion of a foley catheter cause bleeding?
To be on the safe side you should call her nurse or doctor. If she is bleeding, she could have been injured during the insertion, especially if the nurse was too rough with her. Her ureter/urethra was already tender from wearing a catheter and the drainage hole in the catheter may have sliced her. I believe it would be wise to get her on some antibiotics to prevent her from getting a bladder infection.