The term is "casada" (married, feminine)
"Viuda" in Spanish means "widow" when referring to a woman whose spouse has died. It is used to describe a woman who has lost her husband.
wife, female spouse
It depends on the context. If you're referring to the spouse, it would be 'married to.' For example, "She is married to her high school sweetheart." However, if you're referring to a different aspect of the married person's life, it would usually be 'married with.' For example, "He is married with three children."
The name for a male spouse is spelled "husband".
The 16 year old female is legally responsible for herself, since marriage emancipates you. There is no marriage where a spouse is your legal guardian. Marriage is equal.
The correct form is spouse's. Use this form when referring to something that belongs to one spouse. "Spouses'" is used when referring to something that belongs to multiple spouses.
Spouse = married. Can't have one without the other.
When I married my girlfriend she said I am her spouse.
You seem to be referring to being a beneficiary in another person's Will. In that case it depends on the provisions in that person's Will. If they wrote the Will while you were married and left a gift to you and your spouse that gift must be shared upon the death of the testator unless the Will specifically made the gift to take effect only if you were still married or was changed by the testator after your divorce. A Will written by a testator while married will be made inoperative as your spouse automatically after a divorce even if you don't change it.
Esposa.
her spouse
I married a woman. She is now my spouse and I am hers.