What can I do regarding the flappy gum that was left open that won't heal? You can see its not together/ healed/ exposed

Bone graph was placed after implant was placed and dentist made a small surgery to place bone graph - afterwards she placed the sutures and the area she cut wont heal or close bback up.. please see attached images. What can I do regarding this gum! please help!! Doctor suggested cutting? or getting a periodontist advice. please let me know what I can do . Thank you .