Cured From AVM, Paralysis Post A Stroke. Future Precautions?

hello doctor my sister of 26 and half years old suffered a stroke in 2008 when she was during her PG and found that she suffered from AVM.Her one right hand become paralised form 1 1/2 weeks and she cant speak for 5-8 days,gradually she became OK and her hand and speaking problem overcome,Embolisation tried but failed, then went Velloor and undergo radiotherapy .God s grace after 2years(nearly)that malformation completely cured.Doctors said it is miracle and told she is now like a normal person can marry, have children. Now her marriage fixed ,we didnt told all the details (we told she suffered from headache and consume medicined that days).She used presium and levipill.by doctors advice presium stopped and now consuming levipill 500mg on alternative days.Doctor told by February middle she can stop that one also.What should we take care about further sir, is it hereditary?