What is the value of the fetus's blood money in dollars, and to whom should the mother who aborted her fetus pay it? Should she cut ties with her aunt who helped her in this? And does seeking forgiveness and paying the blood money atone for this sin?

You are not liable for the fetus's blood money as long as you did not directly perform the abortion. However, you are obligated to repent for your assistance in the act. The blood money is due from the one who directly performed the abortion and should be handed over to the fetus's heirs. Its amount is one-tenth of the mother's blood money. There is no sin in your disliking your aunt because of her action, but it is not permissible for you to sever your relationship with her. You should advise her to repent and continue to conceal her matter.