Please don't think that I am 'declaring' a problem here...but I want to share a personal experience.
Some years ago a three or four year old granddaughter was visiting. I had opportunity to bathe her...and noticed a strong personal odor THAT NO CHILD SHOULD HAVE. I asked her mother if by chance the child had been molested...and she said 'no'.
Some time afterward the mother called me; and reminded me of my question. The child had visited a neighbor, and was offered a lollipop. She refused (unusual for a child). When the neighbor (whom she also called 'pop') questioned why she refused, she explained: "You and my (0ther grandfather) are 'good'; but (the other grandpop) IS NOT!
The other grandfather had been abusing her...after giving her candy to entice her into his room.
The odor I detected...NOT something a child should have...had revealed what was happening to her.
I can't say this is the case with your daughter...but the odor...combined with her nighttime fears, might need investigation.