Make backup of your save file and edit this entry in it.
"nurseGhostParts": 1, Make sure it looks like this.
If this doesn't help then even I don't know what could be the problem as she appears as she should be for me. At least after update 0.3.2.1.
Well using candle is intended for now but I remember mentioning a buyable light source available after you meet a shopkeeper in a future map. I know candle consumes a slot but that's why there are site assistant you can find. One even can handle two things.