Let’s go over the vocabulary found in the scene
soon | that guy | ‘s | matter| research
Find out about him right away.
すぐに immediately; right away; at onceあいつ that guyの事 the matter of (that guy) [の事 adds the meaning of “everything about” to “that guy.” She wants the details. See our lesson page for more: https://thejapanesepage.com/using-koto-with-people/ ]調べて research [command form of 調べる (to examine; to look up; to investigate; to study)]
such a | fellow | to | our | station | (direct object marker) | if laid waste | trouble (emphatic)
We can't afford to have a guy like that in our station.
あんな such a; that kind of輩 fellow; personに like (that fellow) [gives focus on 輩]うちの our署 department; (police) stationを (direct object marker)荒らされたら if invaded [passive potential form of 荒らす (to lay waste; to devastate; to damage; to invade; to break into)]大変 serious problem; grave; terrible; major incident; disasterよ (emphasis added)
especially | is married | such as | lover | exists | such as | that | area | prioritize
Most importantly, find out if he's married or has a girlfriend.
特に particularly; especially結婚してる is married [casual form of 結婚している (is married) which is the progressive form of 結婚する (to marry)]のか or things like恋人いる have a loverその辺 such things; such a matter重点的に prioritize; focus on
aiming | this | person | all of the sudden | aiming
She's after him. Just like that, she's after him.
狙ってる aiming [meaning “hitting on” or “aiming to get for romance”; casual form of 狙っている which is the progressive form of 狙う (to aim)]この人 this person [meaning her friend]いきなり suddenly; already; from the start