Yes, that could be the same. We only know her with the name Hattie (may a second name like Hedwig or Harriet), maybe also Hattie Elizabeth. As far as I know she was born on 1888-07-27 in Rost Jackson County, Minnesota as child of Gustav SPIECKER and Wilhelmine, nee Lück. In the Minnesota Census - Rost Township, Jackson County, Minnesota of 1895 she has the name Hattie. In the United States Census - Rost Township, Jackson County, Minnesota of 1900 she had the name
Laura. Both must be the same, because the datas of birth are the same.

She married first about 1910 a man I don't have any more informations. He died young before 1932. Than she married the widower Walter E. van Valkenburg (van Valkenberg), born about 1890 - 1892 in Utah, about 1930. In both marriages she had no children. The grand-parents of my husband never got post of them again after 1946/1947. The address at that time was post-box in Marysville. They had some shops of cleaners with the name "Elite Cleaners" in Marysville. This shop does still exist in Marysville, but the owners don't know anything about the family van Valkenberg. We called them years ago.