Flutter relleno entre texto y subrayar

Text(
            "Forgot Password?",
            style: TextStyle(
              shadows: [
                Shadow(
                    color: Colors.red,
                    offset: Offset(0, -5))
              ],
              color: Colors.transparent,
              decoration:
              TextDecoration.underline,
              decorationColor: Colors.blue,
              decorationThickness: 4,
              decorationStyle:
              TextDecorationStyle.dashed,
            ),
          )
Grieving Goldfinch