Kate Middleton looked “pretty healthy” and “seemed happy” to return to public life for two back-to-back appearances over the weekend, royal biographer Sally Bedell Smith tells PEOPLE.

Kate Middleton is returning to royal duties carefully and at her own pace after completing preventative chemotherapy following her cancer diagnosis.

Catherine, Princess of Wales, 42, is slowly but surely reintegrating herself into royal life after beating cancer in early September. "You can’t say she is back... but she is coming back," royal author Sally Bedell Smith told People.