She's just never been a bed wetter before; even when she was still in nappies she was dry in the morning.
Nothing's changed in terms of her routine or how much she drinks. They only thing I can think of is that she's particularly tired from school these days. Is that enough to make a difference? I often end up lifting her if she's had a bit more to drink than normal but it's becoming more regular now. Blimmin pain in the arse when she's wearing a onesie 
Any pearls of wisdom or is this just something that we'll move on from?