This boards focus is for the technical issues of Ancestry's member tree program.
>>I believe the 1901 census is incorrect and it should say 'grandaughter', not 'daughter' so I am unable to save it to my family tree correctly.<<
This is in a UK Census, correct? You can save an individual record transcription to the profile by clicking on the person in the household record transcription and "save to another person" link on the left side of the page.
There are plenty of errors made by census takers and then the transcribers. You gather the data and evaluate it, this includes more than census records.
"Am I right in thinking Hannah Smailes was her mother and she married John Ackerley who was her stepfather?"
A birth record will answer that question.