。
She gave in to the attempt.
Literal
She [topic-は] that attempt [target-に] yielded.
A direct counterpart to ~に成功する — here ~に屈する ('yield to, succumb to, give in to') uses the same に for the target of yielding. 屈する (くっする) means literally 'to bend' (knee, body) and metaphorically 'to bow down before, submit.' The sense here is yielding to a trial or pressure — possibly a temptation, a coercive attempt, or a personal challenge that overwhelmed her. The word carries a slight literary register, matching narrative description of someone defeated by circumstance.