In Re the Marriage of Thach

William and Roselee Thach's 15J/2-year marriage failed by December 12, 1978. At that time Mr. Thach signed a property settlement, custody and support agreement prepared by Mrs. Thach's attorney. Terms included child support for their two children and maintenance payments of $120 per month to Mrs. Thach, "to assist Roselee in completing her college education and obtaining gainful employment." Maintenance payments were limited to 30 months; no reference was made to a possible remarriage. On November 30, 1979, a decree of dissolution was entered. Mrs. Thach was awarded custody and support of…