Take the left

You take the left...

After a few moments sneaking around, you reach a small chamber deep inside the royal palace, likely underground. It seems to be a hub of some kind, and several corridors exit this place. In the center there's a desk and sitted on it is no one else but your head-maid!

What is going on?
Shocked, you stop to listen...

The servant boy give her a complete report of the situation on the kitchens, speak about how he helped the new boy take of Mrs Valeria and then talk about some party that will happen next week. And then he leaves. What? Dumbfounded, you just sit there and think. Why do the servants report to her? Maybe she's some sort of spy...? Is this betrayal? Is she aiming for the throne?

A few moments later a guard shows up, tells her about what is happening on the stables, add some gossip and leave. By the third time, when the head-maid orders the person to "take that to the queen" you realize what is really going on here...

Your head-maid is indeed a spy...
And not only a spy, she's the queen's spymistress
No wonder she's the one training you...

-- You can come out, your highness...
Her voice takes you out of your daydreaming
-- Nana!?
-- Me - She rolls her eyes at you

-- I can see that you're performing well in your quest, your highness
-- Well...? I suppose so... And you're my mother's spymistress
-- Indeed. - her tone is dry, but she can't hide her amusement - I'm surprised that you've found this place, honestly. I expected you to discover some gossip and give up, but you've always been... tenacious, haven't you?
-- Why didn't you told me?
-- Some secrets are for the queen only

That irks you
You thought you could trust her

-- I'm the next king
-- Until you defeat your sister and claim your throne you're nothing more than a boy... and i don't take orders from boys...

This...
You can't stand being treated this way
Still, you know that you have no chance against her, so you must be smart

-- But you support me...
-- Of course not. I was ordered to train you both and i did. You may show more potential than your sister, but that doesn't change anything. I'm not on anyone's side, except for the queen
-- But it does change something... In fact... you will help me

She stands up
-- Oh!? And why is that?
-- Because if you help me i can help you after i take the throne

Her voice turns cold
-- Don't joke your highness. The queen wouldn't approve if i got involved
-- My mother isn't here...
-- The risk is the same
-- And if you refuse and i become king... you're fired. And even if i don't become king, i will reveal to everyone that you are the spymistress of the kingdom and you're fired anyway

She snorts
-- And if you push me i may just decide support your sister instead...
-- But she wouldn't do anything for you. She doesn't even know you're the spymistress, does she? No one does. If you support her, you get nothing. And if you try to approach her with a offer, my mom will get pissed... But i'm already here. And i already know about you
-- That excuse won't stop the queen from making your life hell for even suggesting this
-- But i'm the prince. I won't be punished. You could...

That makes her stop to think
-- And what happens if i support you and your sister takes the throne?
-- Nothing

She raises her eyebrows and you continue
-- Nothing happens because no one will know anything. If i lose and my sister takes the throne you just pretend nothing happened. You don't have to climb the highest tower and scream to the world that you are on my side... no one needs to know

The head-maid stays there, in silence for a long time
You give her time to think
To be honest, you're nervous that she'll refuse

Then she smiles and gets closer to you, seductively
-- Let's say i agree... And what do you want from me, my prince?