mangue: No, I think you're confused.
In this situation, you're forced to take 2 pawns. These are the rules. You could only choose if you had other queen in E5, for example. So, you could take E5 to G7 or E5 to A1 or F8 to F2. But if you only have one possible capture, so you have to take all possible pieces.
Do you understand?