It's none of your business

She doesn’t need you to tell her.

Don't. Changes are she want appreciate it. Some things people just have to see for themselves unfortunately

I'm sure your intentions are good. But I've kept myself out of trouble by staying away from these situations.

Honestly, there is no good way really, it is probably best you just let her figure it out for herself

I haven't figured this out yet.

That's why he is playing it cool - & she is on a fool's game, she will never have him