The $64 question is whether MI law allows the legislature to over ride her veto and if so, can they get the votes?
Search terms for a Google of Michigan law on this subject...Hmmm....”State of Michigan, Overriding Governor’s veto in States of Emergency, current law”
...and among the results is this (ballotpedia.org):
State legislatures can override governors’ vetoes. Depending on the state, this can be done during the regular legislative session, in a special session following the adjournment of the regular session, or during the next legislative session. The rules for legislative overrides of gubernatorial vetoes in Michigan are listed below.
How many legislators are required to vote for an override? Two-thirds of members in both chambers.
Two-thirds of members in both chambers must vote to override a veto, which is 74 of the 110 members in the Michigan House of Representatives and 26 of the 38 members in the Michigan State Senate. Michigan is one of 36 states that requires a two-thirds vote from both of its legislative chambers to override a veto.
Authority: Article IV, Section 33 of the Michigan Constitution.
“Every bill passed by the legislature shall be presented to the governor before it becomes law, and the governor shall have 14 days measured in hours and minutes from the time of presentation in which to consider it. If he approves, he shall within that time sign and file it with the secretary of state and it shall become law. If he does not approve, and the legislature has within that time finally adjourned the session at which the bill was passed, it shall not become law. If he disapproves, and the legislature continues the session at which the bill was passed, he shall return it within such 14-day period with his objections, to the house in which it originated. That house shall enter such objections in full in its journal and reconsider the bill. If two-thirds of the members elected to and serving in that house pass the bill notwithstanding the objections of the governor, it shall be sent with the objections to the other house for reconsideration. The bill shall become law if passed by two-thirds of the members elected to and serving in that house.”