After Death Used Mobile Number Which Crime

Mere father ki death k baad unke naam wali i'd par par jari hoye mobile Sim ko wife ne chori karke apne pass rakh liya, vo usse kisi ladke ko phn karti thi din aur sari Raat extra martial affair what, uske Baad us ne mere sare parivar par FIR karva di, jis din FIR ki us phn number par last call ayi thi aur hum par FIR kar di, 5 saal ho gye hai, police ne FIR cancel kar di thi 2 baar, magar court ne trail chla diya hum kya kar sakte hai, kya wife aur us ladke par father ki death k baad unke number used karne aur FIR karvane par koi case ho sakta hai ji? Criminal conspiracy aur IT act lag sakta hai, call detail main only us ladke ka number hi hai, humara kisi ka nhi hai, hum par wife ne 377, 323,506, 498a lga di hai, 125 ka case bi kar diya hai Plz help & reply, call detail police ne court main lga di hai Plz kya un par FIR ho sakti hai, death person ki i'd par jari sim ko use karne ka Plz help