My dd has been doing so well with using the toilet lately. We have been 3 months and no accidents, she is also waking virtually dry. This was until a few days ago when my mother looked after her one afternoon as I had a late hospital appointment and no one else to look after her. All of a sudden she was not getting to the toilet in time or standing there wetting herself which she appeared aware she was doing. Plus the dry night time nappy was soaking wet. This lasted a few days before returning to normal. I'm pretty sure my mum gave her black currant juice (ribena in a carton) as she always goes on about how I'm being silly when I'm saying no to black currant because it's bad for children and hinders potty training. She won't admit she gave her it and I also went to the go who did a urine test to rule out an infection or glucose in the urine, both she was clear of. How do I make my mum understand why it's bad after I've already explained so much and what the nurse told me when they did the urine test? At the moment I'm refusing to let my dd stay with her but it's a shame as it's nice they spend time together plus it would really help me out.