Although most suicide bombers are male, there have been female suicide bombers as well, including Palestinians and Chechnyan Muslim separatists.
Terrorism experts say this may be the first known married couple to have planned to carry out a single, joint suicide bombing.
Jordan's Queen Rania told ABC's "This Week" she was not surprised that a woman allegedly planned to be a suicide bomber in Amman.
"What does surprise me is the nature of these acts, the fact that they could walk into a wedding and target innocent civilians," she said.
"I think this kind of terror knows no gender," she said.
Rania and Abdullah have openly opposed terrorism, including terrorist attacks in neighboring Israel, although they have frequently called on Israel to alter its responses to such attacks.
Rania told ABC that Jordanian officials hoped al-Rishawi will "be able to give us more clues and more understanding."