Not surprised, I never expect she will sympathise with a guy who has IQ of 69.
So far I remember only OTC & WKW had approved such petition for clemency.
It's not her decision to make.
She's bound to act on Cabinet advise.
Her only options are
1) do not sign the execution order during her term
2) order a delay to execution to an unspecified date
However these 2 actions can be overturned if and when someone acts as President while she is on holiday/leave.
The only thing she can do is fix the execution to a specific date far into the future well beyond her term.
But this will almost certainly result in the Govt taking it to court for a determination whether she can do such a thing