thanks kelebek and snacks for the replies..

- yes DD is now wearing the dry night pull up pants. she isn't a fan of them but she is at least letting us put them on her now. she is actually wetting her pants still in these and then takes them off before she gets out of bed. She has been explained that when she stops wetting her pants she can go back to wearing her knickers.

- we seem to have a "chart" for everything in our house so i guess i'll be starting another one tomorrow. her preschool today ensured they told her to go the bathroom and she went 3 times at school and got a stamp each time for going so i may need to start that at home in conjunction with the chart.

- she begun staying dry overnight in January and only started wetting again a few months ago so I know she is capable of it but for some reason has stopped. I don't know if it's the fact its winter or the fact she has a new little sister that is causing it. She is also not going the bathroom much during the day so I think it may all be tied together and we have a "toilet" issue as a whole.

- DD already drinks quite a bit during the day and as mentioned she was staying dry for 3 or 4 months so I know she is capable

- I've got a brolly sheet already which we use but often DD sleeps on top of her blankets and is in fact wetting through the top sheets and her blankets / doona which means ALOT of washing and not to mention the wet undies & pyjama pants.

- I'd prefer to avoid having to wake her as I believe she would just refuse to go the toilet anyway, she is doing this during the day and also does this right before going to bed - will refuse to go the bathroom or brush teeth so i don't think waking her would result in her going the bathroom anyway.