crohn's disease returning

by Lauren
(Suffolk, England)

hi, i'm asking this on behalf of my mum who has had crohn's disease since she was 17, and an ileostomy since she was 33. her crohn's has been declared inactive since her ileostomy but since she has had a heart attack and two heart operations. she has now started to develop constant headache and tiredness and takes B12 but wears off very quickly. i was wondering if they had anything to do with maybe her crohn's becoming active again?