cctv pointed at my balcony of bedroom

my female neighbor is a nuisance.sveral times i have seen her staring directly in the direction of my bedroom/bathroom from her balcony across the street.ext time i suspect she is doing that again,can i record her using my cell phone for evidence purpose?last week when i came to my balcony she came out at the same time on her balcony across from my bedroom and then started trying to engage me in conversation by saying what i am looking at.Then she sent a police who is her friend/relative to my home and the police was completely talking to me as though i am guilty even though there is no clear compliant or for that matter evidence of complaint.he said he authorized my neighbor to point her cctv camera at my balcony .Does this friend/relative police have any right to give my neighbor permission to point cctv at my balcon 24/7.I have taken cell phone video of the neighbor cctv pointing directly at my bedroom balcony as proof.they also keep changing the exact pointing location of the cctv