05/25/2009 at 06:00 PM EDT
Natalie Cole has been discharged from the hospital five days after undergoing a kidney transplant.
Cole headed home on Sunday to continue her recovery, her rep confirms to PEOPLE.
The Grammy winner, 59, planned to attend a private family memorial service on Monday for her sister Carol "Cookie" Cole, who passed away following a battle with lung cancer the same day
Natalie received her life-saving organ transplant.
"Natalie is continuing to do well under the circumstances," says her rep.
In a tragic turn of events, Cole, who had been undergoing dialysis three times a week following complications from treatment for hepatitis C (now in remission), got the call that a donor organ was available while she was holding vigil at her ailing sister's bedside.
Cole is expected to spend the next three to four months recuperating and will reschedule her summer tour dates in support of her album Still Unforgettable