advice needed

please forgive me if this is completely the wrong place to go but i don't know where else to ask for this kind of info. my family thinks that my niece is being physically and mentally abused by her stepmom. we looked into nanny cams but the ones that upload via wireless will show on the pc when uploading audio. is there somewhere i can go to learn how to make their computer webcam record audio to a private url or somewhere that i can check on/record from my pc? i'm a web designer and know a bit of backend coding- enough to figure my way through something with a bit of guidance. any help would be appreciated. we don't plan to use this in a court situation, we know it won't be useable, but maybe if there ends up being something on there my brother can hear it and actually see what is going on when he isn't home- as of right now he is not able to see the truth of who his wife is.

>>1,OP
First of all, this is /prog/ not /adv/.

Second of all, are you sure the niece not pulling you? Any bruises or scars?

Also, I need age as requirement.

Depending on your laws, you can bug the girl's shoes, or favorite thingy and use it in court, by getting the girl's written consent. >>14 example assumes the "abuse" is in the house. It could be remote. Shoes are the last place people look for shit. So plant a bug on the back of le shoe.

Last but not least, explain the implications of your agreement with the girl. She make not like the results and end your case in a failure.

PS
Waffles for all!