。
She'll come visit us again soon.
Literal
She [topic-は] again soon us [object-を] visiting comes.
訪ねて来ます is a compound predicate: the main verb 訪ねる ('visit') plus the directional auxiliary ~てくる, which orients the motion toward the speaker. In English we'd just say 'come visit'; in Japanese the directional vector is built into the verb. また ('again') and すぐ ('soon') stack as bare adverbs without particles, which is normal in Japanese — chains of time-and-frequency adverbs simply pile up before the verb.