I totally understand - I have mega frustrations with TT. I think the key is for us to not make such a big deal out of it and try not to get wound up. She will get it - it's just a difficult social situation for parents, really!
I took DD (who is 5) to the GP last week because she has recently started wetting a bit during the day. She has never been dry at night. The doc was not concerned about nighttimes - apparently about 10% of 5yos still wet the bed. Day time stuff, well, just loads of reassurance. It's so hard not to get cranky but that only makes things worse and we just need to keep incredibly positive about their toileting 'achievements' and completely neutral when they don't manage it.
GL!