Authorities said their investigation revealed that the victim's 65-year-old sister had stabbed her.
Medics arrived and took the victim to Grandview Hospital. Police said they arrested the victim's sister and began questioning her about what led to the stabbing.
Investigators said that at this point, it is unclear what the motive for the stabbing is. Police said the victim is in serious condition but believe her injuries are not life-threatening.
Authorities said the victim's sister could face felony assault charges after police talk with prosecutors.