Sorry for the delay, I don't get on every day!
Oddly, my daughter just seems to NOT "do anything" overnight. I honestly can't remember the last time she did, though she's usually got a pretty big wee waiting when she gets up!! I still have to MAKE her go the toilet before we go downstairs (she will say she doesn't need to and start to kick off but I just take her there by the hand and she does a HUUUUGE wee!).
As for other people, I used to let them get to me - I went through a stage where i really felt like I was a failure - both of my twins were not toilet-trained when they started school last September (they were aged 4 and 3 weeks, August babies, the youngest in the class by far) and nearly every day I would be greeted by the teachers with a BRIGHT YELLOW bag with their wet/soiled clothes in right in the middle of the playground.
One day I just thought, "you know what? My children are healthy, they love each other and their family, they get on, they interact well with others, they're doing well at school... so flamin WHAT if they have a developmental delay with this?!". Just remember, all those other mums you see out there, EVERY SINGLE ONE OF THEM has an issue with their child - be it biting, not going to bed, toilet problems, refusing to eat anything other than Cheerios for every meal...
Don't judge yourself on others, most of those "perfect" mums are just as bogged down with things as we are, only they're adding to their own pressures by pretending everything's dandy. It is NOT a mother's job to be perfect, it's a mother's job to help their child until they are able to do things independently, whenever that ends up being.
You are doing the right thing, you are being consistent and you are also being braver than all the Ms Perfects out there by asking for help when you need it so that you can help your little one.
Your daughter is lucky to have you. Keep at it, we WILL get there!
x