Depending on what is involved in your specific case, your particular situation may be more or less complicated. When young children, children from different marriages, adopted children, multiple properties, and complicated living situations compound an already stressful legal situation, it is important to rely on a qualified, skillful legal professional that can wade through the legalese and get you the results that you want. Since Montana is a no-fault divorce state, when filing a legal separation lawsuit in Missoula, the court will determine the child custody support and visitation, the property division, and any separation maintenance (spousal support).
The only time that the usual determination of shared custody is an issue is in the case the children are in imminent danger by having relations with one or more of the parents. That kind of challenge to the shared custody is a separate issue that would need to be addressed. But in every other case, a good attorney will always advise their clients to work together in harmony for the good of the family to share in the burdens as well as the benefits from their life together. Though it may be a harder trip, taking the high road offers great benefits in the long run.