Wierd Orchid Friend? Or Foe?

[Tindomul]

So I have heard of the legendary pest killing powers of the Lady Bug. And for many years I have tried to get one to live in my vivariums.
The other night I found one in my apartment, and thinking about my recent troubles with mites, I decided to put the lady bug on my phal. Tonight, I look at my phal, and who do you think I find still walking on my phal? Little Miss Lady Bug.
This is the longest I have ever been able to get one to stay in one place for me.
So this means either
A)The lady bug is making dinner out of my Phal, yet I see no damage
or
B)She has found food(mites!!!! ) and is devastating their numbers as we speak .
Yet again, I see no damage from mites either.

Whats up???