Alison sounds like Walter

Only the voice that came out did not sound like Alison at all. Rather, it was still Walter's gruff male one!
Even worse what that expression on her face which radiated a high level of confidence.

"Dad!?" his kids asked.

"Yes! It is me!" the Alison with the Walter voice beamed at them.

What happened next put hyenas to shame because the other family members burst out laughing. Except for Rebecca who was jumping up from the couch and starring at the Alison impersonator quite angrily.

"Jesus fucking Christ, Walter! I don't know what is worse, the barely legal teen standing in front of me or the man-child who is trying and miserably failing to impersonate her!".

"Child? Rebecca, I don't see any child here, just beautiful 18-year old Alison!" Walter the Alison said and turned her bum towards her family.

Now visibly shaken, Rebecca demanded "Walter! Change back this instant!".

"No!" came the snark reply.

"No? What do you mean no?" asked Rebecca.