。
She tried to jump up one more time.
Literal
[topic-は] one-more-time jump-up [tried-to-ようとする-past].
跳び上がる is a compound verb pairing 跳ぶ ('jump, leap') with 上がる ('rise, go up') — together 'jump upward.' The same frame works with 立ち上がる ('stand up'), 起き上がる ('get up [from lying down]') — ~上がる as a final element marks an upward or completing motion. ~ようとする ('try to do, be about to do') is the volitional form of the verb (跳び上がろう) plus とする — capturing the moment of effort or attempt. With 跳び上がる especially, this often describes athletic effort that didn't quite succeed, which is the implied frame of this sentence.