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I am very sorry to hear about this situation. On this website, I do not always get to give good news, and this is one of these times.
1) Unlike spouse to spouse, children do not have an automatic right to inherit the property from their parents. For example, most states including Minnesota have laws that allow a surviving spouse to inherit at least a little from their spouse so as not to be completely left out of the estate. See HERE for Minnesota. Unfortunately, the same is not true for children.
2) Ergo, the children do not inherit unless: very specific circumstances arise: the two held the property as tenants in common in which case, his part is not automatically taken by her and (1) there was no WILL in which case the children inherit part (see HERE under "Who Gets What"), or, (2) there was a WILL and it stated that the children inherit his part.
3) If they held the property as joint tenants, then she inherits his part even if he gives it to someone else in the Will.
4) If not sure whether or not they held it as joint tenants or tenants in common, you can check the deed records.
5) Finally, there is not a right to see the Will. You can file in Court for probate (to open, or reopen) to demand to see a cop of his will, if you were not notified of it and/or probate was never filed. If it was filed, then the Will shall be part of open court record.
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