Chicken Dispatch Query

Hi All,

Last Sat I had to dispatch one of our hens, it was the 1st time I have done it but it all went well by using the head dislocation method.

My girlfriend was away on holiday at the time and she really wanted to be a part of our 1st dispatch so instead of plucking and gutting the chicken on Monday I froze the whole chicken (feathers / guts and all)

The idea being, when the OH gets back off holiday we can defrost the whole bird and carry on with the plucking and gutting together as a team.

Thing is, since then my mother has told me I should NOT of froze the bird without preping it first? she could not give me a reason why, its just something she could remember from her early years when grandad used to keep chickens.

So,
Have I done wrong by freezing the whole bird without prepping?
What are the conciquenses?
Can I just defrost and carry on with the plucking and gutting as if it has never been froze?

Many thanks
Scott