Rakesh,
Dont worry. The material facts are taken into consideration. If you have spoken for 2-3 hours before the death, this 2-3 hours is the time where many things can happen. She or her family members have hide something which it is not known to you. I dont think that the chargesheet will be filed. Moreover, you are not present at the place so this cannot be termed as your involvement in suicide. There are various ways for which you can get out. First is the delay in filing the FIR. This is the most important issue to see as this fact cannot be dismissed. The initial investigation on the day of the suicide is important. Get the copy of that investigation and statements in RTI. This will come to you for rescue.