帮忙分析一下下面的句子

这个句子要分开来看,就清楚了
An 18-year-old girl has managed to figure out something.
Multi-national corporations have not manged to figure out something.
It has led to her being flooded with offers for her amazing leap forward.
这三个句子拼在一起就是上面这个长句了。

How an 18-year-old girl has managed to figure out something that multi-national corporations have not：这是一个复合主语。整个部分是一个从句做主语，而其中还有一个修饰先行词 something 的定语从句 that multi-national corporations have not（something 是这个定语从句的宾语）。
has led to：主句谓语
her：主句宾语
being flooded with offers for her amazing leap forward：宾语补足语。这是一个 being + 动词分词（形容词）引导的“伴随”表语 （从 who/that is flooded......演变而来）。其中：
with offers ......是一个介词短语做方式状语
for her amazing leap forward：是一个介词短语作原因状语