Is you cat able to urinate and defecate on her own?  If so I would place her in the litterbox every 6 hours (4 times daily) if possible.  Just before bedtime, when you wake up at about 30-45 after you feed her.  When we eat it stimulates gut movement and increases the urge and impulse to defecate. 
If she is unable to urinate on her own then you will need to express her bladder manually.  Your veterinarian should have demonstrated how to do this.  First you feel for the bladder-it feels like a water balloon when full.  Then you apply firm, steady pressure to stimulate urination.  Depending upon the cat this may need to be done every 4-8 hours when needed.
Keep up the good nursing care!

 About every 2 hours after she eats good luck and sorry to hear.

 Place her in the litter tray every time before you feed or give her water. Hopefully she will then associate using the litter tray with reward of food or treat and it will help her to relearn good habits. If she has a weak bladder at the moment through the stroke, she may need to go more often than before.