If a person does Istikhara with the intention that she will not follow it if it comes out bad, is this intention of Istikhara valid, or will they have to perform the Istikhara again with the intention that they will follow whatever Allah wills?
If the person had the intention not to follow the Istekhara if it come out bad, the Istekhara is invalid. Istekhara means seeking guidance from Allah whether we like it or not. The intention of not following it if it come out bad means that the person is not seeking guidance from Allah through Istekhara, rather wants to dictate what he wants on the Istekhara. Such act is wrong and has no value.
Wassalam.