That girl is always talking about who got married, other people's business, and this and that.
She is always going on about who got married, gossiping about other people, and just blabbering on and on.
ーThat girl is always talking about who got married, other people's business, and this and that.
「あの子はいつも誰が結婚したとか、他人のこととか、あーだこーだ言っている」
to get married で「結婚する」
this and that で「あーだこーだ」
ーShe is always going on about who got married, gossiping about other people, and just blabbering on and on.
「彼女はいつも誰が結婚したとか、他人の噂話をしたりとか、延々とおしゃべりばかりしている」
to go on about ... で「…についてしゃべり続ける」
to gossip で「噂話をする」
to blabber で「ペラペラとしゃべる」
on and on で「延々と・長々と」
ご参考まで！
She’s always talking about other people — who married whom and this and that.
**She’s always talking about other people — who married whom and this and that.**
* **always talking about other people** で「いつも他人のことを話している」
* **who married whom** は「誰が誰と結婚したか」
* **this and that** は「あーだこーだ」「いろんなこと」をカジュアルに表す便利な表現です。
カナダ 
アメリカ合衆国 
