Have you tried to follow Raichel back? My thoughts are that Raichel could be a half sister to Flower, hence the change of surnames also Raichel is listed as black instead of mulatto. Or she could be married. Sometimes following siblings can lead us to our answers, it just takes a longer route. Also interesting to me is the spelling of Raichel, is this how she spelled her name or is the census takers spelling of the name, might be a clue on how to track her.