Although she is not living at the house, we try to be consistent. Whomever is putting them to sleep will read to the kids in bed, and then I will usually sing them to sleep. They all sleep in one bed due to our house size. She used to nurse our youngest until the fall when she stopped that.
After reading, I will then sit at the end of the bed, and I am also working on them falling asleep themselves. However, given the turmoil in our life right now, I give them lots of flexibility. They need the security of me.
Our previous sleeping arrangement was a disaster, with musical beds and often co sleeping. I thought it worked ok at the time, but obviously it created other problems. W and I often were in different beds.
The main issue last night was my D was seeking cuddles, and playing with my W's "milk". Although there is none, that's what she used to do, and she would often fall asleep with them. Understandably exhausted. W just got more and more frustrated, so by time I came home from work, she was close to exploding