I have three Sealing to Spouse cards each of which seals my female ancestor different husbands. What do I do?
Yes. After a female ancestor has been deceased for one year and one day, she can be sealed to more than one husband. Please review the official statement within the link here:
A deceased woman can be sealed to more than one deceased husband, including husbands from whom she may have been divorced. All of her husbands must be deceased, however.
For all temple ordinances, please use the woman’s maiden name.
In addition to the above answers, which are very good by the way, here is another bit of information you may enjoy.
Temple ordinances and worthiness of ancestors • FamilySearch
The part I particularly like talks about the fact ordinances for the dead depend on the deceased person's personal choice as well as worthiness. There are also scripture references from the Doctrinie and Covenants.
May you be richly blessed as you continue your efforts in your family history.