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I am sorry to hear about this situation. Without any court orders in place, either party can (a) take a child out of state and (b) make financial decision in a marriage.
Under Mich. Comp. Laws § 750.350a, a court order is required to be broken for custodial interference to apply. Without it, either party has natural rights as a parent to take the child. The other party can say no, but the parties have to work it out peacefully. And, no law decides how financial matters are handled in a marriage.
Now, you do have the ability to ask for temporary orders (even emergency orders) if she or you file(s) for divorce/separation, asking to:
-not take the child out of state, and
-to freeze any unnecessary/major financial decisions by either party until the assets of the marriage are divided.
However, this has to be done in court and for that, a separation/custody/divorce matter actually has to be filed.
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