Annulment marriage timelines procedure..

Married to my cousin for 7 years. She is suffering from schitzofernia now for 7 years .initially we thought she wanted to get married to me as her family also forced but since we got her to doctors we came to know she is having schitzofernia .she is getting treated by phycatrist for last 4 years now.her family also is not supportive and doesn't allow her much into their once like once in year for 2 days. She has stopped taking medicines for 1 year now and again becoming voilent with my father nd mother . She is staying at my house with my parents for last 5 years as she was having continuous arguements with me and I keep on going to my house once in. 6 months. She does not allow my parents also now to spenduch time withy kids.keeps on changing due to her disease sometime my dad is God for her , sometimes I am good but then sometimes we are worst people . Just trying to make sure my parents nd my kid is safe . I tried my best not to leave her get her treated but she does not agree to anything I say nd plus not taking medicines making it worse.confused what should I do anulmnent nd if I do so can she file DV against me . Now she is living alone since she gets hyper with my father so he also moved out at my home with my kid who is 5 years I worry about my kid also as she is dominating him also .please advise me.