In the waning stages of pregnancy there is an increase in mom's estrogen levels. One of the purposes of the estrogen to help make her ligaments a little more "loose" in order to facilitate labor.
That estrogen crosses the placenta during pregnancy and after delivery, we can still see some lingering effects.
In little girls, the estrogen causes a white vaginal drainage that will eventually lessen over time. It doesn't need to be cleaned off. Only poop in the vaginal region needs to be removed.
In addition, little girls can have a bloody vaginal drainage from the withdrawl of mom's estrogen. It's creepy, even scary, but totally normal. It's a mini period and the bleeding should stop after the first few days of life. If it doesn't, see me.