She tried every tactic she knew to persuade her parents.
Tips
history
From Wu Cheng'en's Ming-dynasty 《西游记》 chapter 73: 浑身解数如花锦 — describing a character's display of martial arts as brilliant as brocade. 解数 (xièshù) originally meant a wushu form or move, and the idiom kept that 'every move I know' sense.
mistakes
Read 解 as xiè (not jiě) here — it is the martial-arts reading meaning 'move/technique'. Always used with a verb of effort: 使出, 拿出, 施展浑身解数.