Finley Boyle , a 3-year-old Hawaii girl who suffered massive brain damage after undergoing a dental procedure last month , died Friday night , a hospice said Saturday . The girl died with her family by her side , said Kenneth L. Zeri , president and chief professional officer of Hospice Hawaii . `` There are few greater privileges in life than to accompany someone on their end-of-life journey , providing comfort and support not only to that person but also to their loved ones , '' the statement said . `` As with all of our patients , we were truly blessed to be able to be there for The Boyle Family and for Finley at the end of her journey . '' Finley 's parents are suing a Kailua , Hawaii , dentist , alleging negligence and dangerous conduct . The lawsuit , filed against Lilly Geyer and her practice , Island Dentistry for Children , alleges improper medications with incorrect dosages were administered to the girl on December 3 , according to court documents filed this week . When routine surgeries go wrong . `` As a direct and proximate result of the medications administered to ( Finley ) by defendants , ( Finley ) suffered cardiac arrest during her dental procedure , '' the lawsuit says . It alleges that , as a further result of improper medications , Finley `` suffered severe and permanent brain damage . '' Neither Geyer nor her attorney , John Nishimoto , responded to CNN 's requests for comment . The Island Dentistry website states it has been permanently closed and directs patients to an e-mail address . The lawsuit , filed Monday in Hawaii 's First Circuit Court , alleges that Geyer had no plan in place to respond to medical emergencies , such as the one Finley suffered . It seeks unspecified damages . Girl declared brain dead after tonsil surgery . Finley 's mother , Ashley Boyle , said she first took her daughter to the dentist in November , when she was told her daughter needed six fillings and four root canals , she said . They returned in December to undergo the root canals , Boyle said . The parents allege that Finley was sedated and left unmonitored for 26 minutes . Finley was moved from a hospital to the hospice in late December . Finley 's pediatric neurologist , Dr. Gregory Yen , said MRIs showed the girl suffered severe brain damage and that she was in a `` persistent vegetative state . '' 10 shocking medical mistakes .
Girl 's parents are suing a dentist alleging negligence and dangerous conduct . They allege she was given improper medications with incorrect dosages . Finley Boyle suffered cardiac arrest and brain damage , the lawsuit alleges . The dentist has not responded to requests for comment .