夫妻共有的房子，一方去世，房子自動歸還在世的配偶。你先生自己名下的其他財產，他女兒可以和你分。
美國那麽多二婚的，沒聽說一方去世後，另一方要賣房來或是準備好現金來付去世一方婚前子女那份遺產。
以下是我從網上節選的，那個例子和你的一樣。
The Spouse’s Share in Oregon
In Oregon, if you are married and you die without a will, what your spouse gets depends on whether or not you have living descendants -- children, grandchildren, or great-grandchildren. If you don’t, or if all of your descendants are also descendants of your spouse, then your spouse inherits all of your intestate property.
If, however, you die with at least one descendant who is not the descendant of your surviving spouse, then your spouse inherits only 1/2 of your intestate property.
Example: Barrett is married to Jed and also has a 12-year-old daughter from a previous marriage. Barrett owns a house in joint tenancy with Jed, plus $200,000 worth of additional, separate property that would have passed under a will if Barrett had made one. When Barrett dies, Jed inherits the house outright -- it’s not intestate property -- plus $100,000 worth of Barrett’s property. Barrett’s daughter inherits the remaining $100,000 share of Barrett’s property.
例子：Barrett 和 Jed 結婚 並有一個12歲的，上次婚姻中的女兒。 他們共有一個房子。 他自己還有一個價值20萬的另一個房子，如果Barrett有遺囑的話是會分配一下這個房子的。 當Barrett死後，Jed 擁有了他們曾共有的房子－－這房子不是遺產－－加上10萬Barrett自己持有的房子的一半。 Barrett 的女兒繼承剩下的10萬Barrett自己持有的房子。
這兒是網站地址：
http://www.nolo.com/legal-encyclopedia/intestate-succession-oregon.html
你讓他女兒查一下 “Intestate Succession in Oregon”
