Posts in Neighbors over 90 days old

Is there any way to retrieve posts over 90 days old in the Neighbors app? We believe a slander post was created around mid to late April regarding a home that involved children and the actual address. The neighbor has been harassing my friend to the point she has called the city multiple times, takes pictures of her children in the back yard (privacy fenced in yard), now we hear she apparently posted pictures and what not on the Neighbors app as well. Is there any way to see posts over 90 days old to verify the information in order to file harassment charges against this person?