devoted to benefiting as many people as possible 为形容词短语作伴随状语，没有任何问题，没有必要改为现在分词短语，虽然改为现在分词短语也是可以的（devoting myself to benefiting as many people as possible 略显繁琐）。

网友的问题是对-ed过去分词演变的形容词用法不够了解，误以为本句为错误。

be devoted to sb/sth为系表结构，作状语是系词be的现在分词being通常省略，devoted to sb/sth作状语，表示主语作谓语动作时所处的状态。

to Mikee:

这个句子没有歧义。形容词短语的逻辑主语不可能是作定语的her, 只能是句子的主语。

问题不在于你用形容词短语，还是现在分词短语，而在于原句I will follow her example, devoted to benefiting as many people as possible.

有一个问题，让人无法知道形容词短语devoted to的修饰对象。所以原句成了一个问题句。

可能情况有两种

1. I will follow her example to be devoted to benefiting as many people as possible.

2. I will follow her example of being devoted to benefiting as many people as possible.

改用现在分词也可以，意思稍有点区别。