I see you are using Leware instead of Lewave which is a good possibility to me as there is not such name in LeWave in French Canadian records. In the 1900 and 1910 census records, Harriet says her father was born in Germany. Now that could be Alsace-Lorraine which has that mix of German and French people and she is calling it Germany or he could really be from Germany with a name like Sears. However, that name could also be of a French derivation like Cyrs and then that poses the problem of two names. That could be answered if it is a dit name like Leware dit Cyrs. Just trying to think about some issues that may be affecting why we cannot find her parents. I could follow the collateral lines of her siblings but I cant find any!!