What is the ruling on money received by a sister who retired from working in a pig farm in France, before and after Hajj, knowing that she does not want to perform Hajj with this money?

The money earned by your sister from working in a pig processing plant, as well as her retirement fund, is unlawful money (haram) that must be disposed of by giving it to the poor and needy, or for charitable causes such as building hospitals and schools. If she is poor and in need, it is permissible for her to take what covers her needs and necessities, and what enables her to perform the obligatory Hajj, because in this case, she is considered among the recipients of this money.