No. That is her fiance, because of their relationship he can not be her legal guardian.
The legal age in which an individual may live with temporarily will vary by state. However, the minimum age is typically around 15.
Temporary DutY
There are two way that military school could be free for your daughter. The first is that there are a number of public military schools available. Grant's scholarships and financial aid can make a private military school free. If you have a relative working there right away you get a break on tuition.
It is known a Martial Law.
No, the only way grandchildren can get benefits is if the grandparents have legal guardianship of them, as if they were their own children.
Temporary Assigned Duty.
Temporary rule by the military simply means running the government on interim terms. This normally happens if the country has no elected government yet.
In US, this is a "brevet" promotion
The 'cadre' or people posted at a military instillation, temporary or otherwise.
You can write a military hardship letter by explaining your circumstances. It can not be due to a temporary situation but has to be something that developed after you joined the military.
Marshall Law
Military powers, treaties; appointments and temporary appointments