Answer: Jessalyn can only receive blood from a donor who is blood type A- or O-.
Explanation: Jessalyn has blood type A-, which means that she has A antigens on her red blood cells and no Rh factor. According to the ABO blood typing system, people with blood type A can receive blood from donors with blood types A and O, but not from donors with blood types B or AB. According to the Rh blood typing system, people who are Rh-negative (like Jessalyn) can receive blood from donors who are Rh-negative or Rh-positive, but people who are Rh-positive can only receive blood from donors who are also Rh-positive.
Therefore, Jessalyn can only receive blood from a donor who is blood type A- or O-. She cannot receive blood from a donor who is blood type B, AB, or A+ or any other positive type. It's important to double check blood types during transfusions to avoid potentially life-threatening situations like in this case.