How do you hide friends on facebook indefinitely?

[Jay]

So I have this ex girlfriend who watches my list by making fake accounts, pressing add friend, cancelling, yet still seeing all my friends as suggested friends. On my account I have my friends set to only me, but I know she can see them through suggested friends as she has named off people on my list. I just am not trying to get a rise out of her from the friends on my list she doesn't know and don't need the accusations. I do not know her name on the fake account/s either so its not like i could just block her... Am i stuck here having to worry about her messaging my friends saying rude things or is there a way to stop her from seeing?

[Daniel]

You Can Hide your Friends List But you Can Not Hide Friend Suggestions That you have No Control Over and She Can Still See your Mutual Friends That you Can Not Hide Either