Surviving as the Weakest Maid in the World

I transmigrated into a virtual reality game based on a rofan novel.
Evelyn, a maid, the weakest character with 1 star that you would normally not even pay attention to.
Low stamina!! Vitality is rock bottom! Minimum agility! Low intellect!
Evelyn, the maid, whose charm, which is an indicator of attractiveness, is at the max level…!
My stamina plummeted just by breathing, so I was lucky if I didn’t die for at least a day. I barely managed to survive thanks to overusing Fatigue Relief Potions and quest rewards.
In order to return to reality, I must unite the main characters, defeat the final boss, and see the ending.
According to the original novel, I thought the ending would be like eating cold soup for the 10-star powerhouse couple…
The female protagonist, Bianca, the daughter of Marquis Vicious, whom Evelyn serves, is kind to the maids but shows the coldness of a Northern Grand Duke to the male protagonist. Huh?
The male protagonist, Duke Leonian, who was naturally cold-hearted but kind to Bianca, was also agitated. What?
No, this must be an obvious error.
I try to connect the two by pouring in a potion of healing agent. Instead, the relationship becomes more and more twisted.
“You’re not just a maid, you’re already my friend and sister.”
“Didn’t you fall in love with me at first sight? Why are you drawing a line after shaking me up?”
Meanwhile, the secret of the maid, Evelyn’s birth which was not in the original work.
I have an ominous feeling that we are moving further and further away from the normal ending.
Is this game really okay as it is?