I am not familiar but a brief bit of research suggests that: The petition must allege that the candidate is “aggrieved on account of fraud or mistake in the canvass of the votes by the inspectors of election or the returns.” Mich. Comp. Laws 168.879(1)(b). "The petition shall contain specific allegations of wrongdoing only if evidence of that wrongdoing is available to the petitioner. If evidence of wrongdoing is not available, the petitioner is only required to allege fraud or a mistake in the petition without further specification."

I did not find Stein's petition but if making a bald allegation without specific evidence is enough (as it seems to be from a plain language interpretation of the law), that is a very low bar to hurdle.

Trump is arguing that Stein is not "aggrieved" since she did not receive many votes. Full objection here. But I do not seem to see anything that suggests one has to be a "near winner" to be "aggrieved" enough to file a petition for recount.

So who knows. The Michigan AG is a party to the objection so who also knows how that would effect things.