How to say in Czech: How good is her Slovenian?

English
How good is
Czech
Jak dobře umí slovinsky?
Her Slovenian is getting better.
Her Slovenian is very good.
Her native language is Slovenian.
Is she learning Slovenian on her own?
How do you say that in Slovenian?
I do not speak Slovenian very well.
You speak Slovenian very well.
He is learning Slovenian.
Is he learning Slovenian?
Slovenian is a difficult language.

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