Law / Working in Poland while being self employed in the UK and paying tax and in there [24]

POLAND

Hi Everyone, I need your advise.

My girlfriend, she is self employed fashion stylist in UK. Recently we moved back to Poland.
She is still having jobs in UK, so of course she will be paying income tax over there but she would hove some jobs over here in Poland. My question is. Does she has to register in Poland and be self empolyed in both countries? Im not very good in that, so please help us.

Thank You
Kind Regards