Outlook account hacked

Hi guys, i was wondering if there is any way i can get help with a hotmail account that was hacked, it belonged to my stepmother who passed away a year ago but we started recieving email from her accont a few days ago. As you can imagine we were pretty concerned about the fact since around 20 different email accounts were contacted via her email all saying they got a werid link to click on. The email account that i am speaking of is *** Email address is removed for privacy *** and i have all the appropriate documents in order to validate the account like birth certificate, death certificate, passport etc. hope someone out there can help us get the account back.