When you stated, "...just simple leave to used by family.." and then "wants it to be here to be lived in buy his family," I interpreted that to mean that your parents were looking for a way to leave the house so that all the kids could have use of the house - rather like a vacation property.
There appear to be 3 ways in which real estate can be owned in Rhode Island:
Tenancy by the entirety: This form of ownership is available only for married couples. There are number of features to this form, but, for your purposes, there are two that are pertinent. The couple is treated as one "legal person." Therefore, one spouse alone cannot take actions regarding ownership. And it carries with it the right of survivorship. That means that when one spouse dies, the other spouse automatically becomes the sole owner by operation of law rather than through other means such a will, a trust, etc.
Joint tenancy with right of survivorship (sometimes just shortened to "joint tenancy"): When one co-owner dies, the other co-owner(s) become the sole owner(s) by operation of law rather than through other means such a will, a trust, etc. The difference with tenancy by the entirety is that, while the co-owners are alive, each co-owner can convey their ownership interest if they desire through sale, gift, etc. without the co-owner's agreement. And each co-owner can take action to break the joint tenancy and convert their interest into a tenancy in common.
Tenancy in common: Each co-owner can, while living, can convey their ownership interest if they desire through sale, gift, etc. without the co-owner's agreement. In addition, a co-owner can specify what happens with their interest when the co-owner dies by means of a will, a trust, etc.
Therefore, if Mom and Dad own as tenants in common, then Mom can make provisions on the disposition of her interest when she dies. If they own as joint tenants, then she would have to "break" the joint tenancy to convert it to tenancy in common first. I don't know details of Rhode Island law, but, if this is necessary, she probably can do it without Dad's approval and it is probably fairly simple to accomplish.
I have to say that the end goals here a bit unclear. You speak of Mom
and Dad having a goal. But then, you only mention Mom taking certain actions. Is the goal that you alone own the entire property when they both pass away?
And then:
I was told she can will..quit claim deed etc
Is it her intention to quit claim her interest to you now or devise her interest to you when she passes away? What happens to your father's interest?
EDITED TO ADD: Using the passive voice ("I was told...") is not a good thing. Who did the telling may make a difference in responses. If it was a Rhode Island real estate/probate attorney who had viewed a copy of the deed, responders here will probably make the presumption that the attorney knows whereof he/she speaks and, unless it seems way out of line, accept it as the way the law is in Rhode Island. After all, nobody knows the statutes and case law in every state. On the other hand, if the telling was by various neighbors and the grocery store clerk, responders here will probably look at it more skeptically. [Sermon over.]
