Anyone an expert on hacking?

Evening all,

Is there anyone that knows how to trace hacks on FB? A friend of mine is convinced she has been hacked. Friends deleted, all friends getting unsolicited friend requests with no obvious connection, i.e. no similar interests.

She has a protection order against her ex-hubby and was put in a safe house. There is also an ex-bf who was controlling which is why he is an ex!

I'm just trying to help out a friend who is getting very worried for her safety and that of her family.

If anyone can point me in the right direction it would be appreciated!