。
She got off at the next station.
Literal
She [topic-は] next [possessive-の] station [at-で] got-off.
降りる ('to get off, to descend') is the verb for disembarking — used with trains, buses, planes, or any conveyance you ride. The で here marks the location of the action (getting off). Note that 降りる is intransitive; the corresponding transitive 降ろす ('to drop off, to let off') is what a parent might do for a child at a school. Train and station vocabulary is foundational for life in Japan, given the country's extensive rail network — the JR lines, private railways, and Tokyo's labyrinthine subway are all everyday infrastructure.