where "her" refers to Mary.

If not, why and what possible verbs can occur in the infinitival complement after (believe+object) provided that I can keep an object pronoun referring back to the subject?

Thanx in advance :)

I've a sort of syntactic analysis I've to do;

I don't  know if I can go for it here or in the linguistics part.

In brief, I want to argue fo sentences like 

Mary believes Jack to be flawless

to decide between subject to object raising and s-erasure as a transformational rule based on passive and reflexive pronouns.

So I was thinking, if believe can take infinitival complement in which there's a pronoun referring back to the subject. (Syntactically both the subject of the matrix sentence (the main clause) and the object pronoun of the infinitival clause (the embedded clause) are coreferential).

From "Mary believes that Jack is flawless", STOR produces "Mary believes Jack to be flawless"

 Similarily, from "Mary believes that John will betray her" STOR produces "Mary believes John to betray her". 

But then I question the grammaticality of the latter sentence.Your answer is no. Is it because believe can't have an action verb in its infinitival complement? 

The 2nd part of the question: Can you produce a similar sentence to "Mary believes John to betray her" using a verb other than betray but keeping the whole structure of the sentence?

Hope that it helps claryfying my point

Thank you very much for replying and bearing with me