The website isn't using parameterized queries, which is a fairly serious security flaw. Most likely, your mother is putting a single quote in a field where the programmer didn't expect it, and because ...

left join opendatasource('SQLOLEDB','Data Source=192.168.0.3;User ID=username;Password=userpsd').dbname.dbo.detailtable _b on _a.id=_b.fatherid left join ...