Let's consider the example sentence
Alice's trying to frame him had left Bob wary of anything she might do or say in his presence.
If I now wanted to express that Alice allegedly tried to frame him, would I insert it as an adjective or an adverb?
Put differently: is "trying", in this case, considered a noun or a verb?
Personally, I'm thinking it would make sense for it to be a noun, s.th. the sentence would end up being
Alice's alleged trying to frame him [...]
And though I cannot help but feel this sounds wrong, I can produce no good reason why I should use an adverb with "trying", here.