Simplify the following text for a Grade 8 native English-speaking person.
Original: As a matchmaker , however , Sophie proved more diligent than Frederick and , overcoming sticking points on the amount of the dowry and the status of Orkney , she sealed the agreement by July 1589 .
Simplified: She was able to overcome difficult points about the dowry and the position of Orkney . She sealed the agreement by July 1589 .