Question about fine tuned model with accents

[GUUser91]

I fine tuned a model of a voice with an american accent. Here is the reference audio.
https://vocaroo.com/1igFJrW4aKB8
Here is the source audio with a british accent.
https://vocaroo.com/1bcFsz01pJov
But the output audio has a british accent instead of a american accent. Why is that?
https://vocaroo.com/1lejR48bGDZh

[Plachtaa]

I'm afraid your question is difficult to answer :( perhaps it is better to find out yourself