I've nursed other babes, my DD has been bursed by other mamas...
its totally natural and normal and the best thing to do in that situation
Google me, you know you want to
BUT, make sure your sister still tries to pump so her supply doesn't diminish. And she needs to co-sleep, sling-wear (skin to skin contact), nurse on demand, etc on the days that she has the baby with her.
Good luck! YOu're a great mom and a great sister!
Mama to two awesome kids. Wife to a wonderful, attached, loving husband. I love my job-- I'm a Midwife, Doula and Childbirth Educator, Classes forming now!
Good for you, thinking outside of the box and mainstream!!
My cup overflows with a wonderful husband and two beautiful daughters and another on the way in April 2012!
I knit : I sew : I read : I craft : and I very occasionally and irregularly blog