In In re Marriage of Hamilton, 120 Wn. App. 147, 84 P.3d 259 (Wash. App. 2004), the mother left her husband in Texas to return, with their seven year old son, to her parents' home in Washington.
Five months later, she sued in Washington for dissolution of the marriage and for child custody.
The mother had lived in Washington for seven years as a child and had attended one year of college in that state.
The son had serious medical problems and had received extensive medical treatment in Washington, where he was covered by Medicaid.
These facts furnished a sufficient factual basis for jurisdiction. Id. at 263.