After Amy was told about how Jeff had become an anthro she decided she wants to see how a Cat Girl will go over at the party so when her Mum and Jeff were not looking she went to the computer and made some changes in the Chronivac.
Amy looked over the stats for her family and after some time of study she only made 3 changes.
The first two were to turn off the awareness of her mother and Jeff, then she changed Jeff's sex to female.
After she made the changes Amy turned off the computer and went to help her family get ready for the party.
When she got into the other room Amy seen that Jeff was naked except for her new fir which did not cover her 8 small breasts.
Amy watched for a bit but nether of them seemed to be noticing anything was wrong.
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