Yup, I'm OK with that (though it's friend, not firend).
the next bit is:
If I say IT like this is it OK? (you forgot the it).
the "She's nothing of mine" is wrong. You could say, "I don't even know her".
Or "She's someone I know, but she's not really a friend."
Or "I've never seen her before."
It all depends on what the truth is. Should I write out the restraining order now? You might need to look that one up!!!