filming her in public places of your home is 100% legal living room kitchen hallway your bedroom (the no no places are the bathroom and any private area other then your own) .........u live there it is your home so this is allowed

the part u are thinking about is recording phone chats that is where they do the werid 1 person knows it ok other states both ppl need to know and agree

the only thing u can really do is record it so if something does happen it caugh on tape so u are not charged as she is a female u are the one going to jail .........check your local law see what is allowed some places allow tazers or pepper spray others outlawed them.....something happends she comes at u ...u use one of the 2 she is on the ground u walk out of where ever u are find a 3rd party person and call 911 (personally i strip down to boxers and a t-shirt kneel down and interlock my fingers behide my head) after that u have 4 to 6 hours of dealing with cops