hmmm, never heard anything about lips fusing.

I don't clean inside Paiges vagina...I may wipe gently on the outside of the lips...but I dont open them and clean inside IYKWIM. The midwife told me to leave the white gunk in there and it will come out in the bath when she kicks and plays of its own accord. Just like we dont get in there and clean ourselves I dont clean her...I dont want to disrupt her good bacteria.

If you are worried...then perhaps gently wipe just inside her lips with warm water and cotton wool, but I wouldnt personally go any further.