Help to sentence

Provoked by her nonchalant way of talking about such a serious matter, he gives her a look.

Provoked by the nonchalant way she's talking about such a serious matter, he gives her a look.

Provoked by the nonchalant way she talks about such a serious matter, he gives her a look.

Provoked by the nonchalant way in which she talks about such a serious matter, he gives her a look.

Are they all correct? And which one should I go with (if any)?

Thank you in advance.