She did not allow the doctor to check her condition, because it was the doctor who had pricked her with needles even when she was healthy, never wanting to let go of her.
She was afraid, loathful, and sick of dealing with them. So she hit the doctors.
That was the reason why Tang Luo thought that she would rather stay ill than seek help from the doctors.
And Tang Yu—
The girt who was the same age as Rong Yan's daughter, but a villainous and evil person.
When Rong Tan was still dumb and missed her daughter so much, she pretended to be gentle as a strategy to trick her of her many spirit herbs. And she would turn against her after she got the spirit herbs from her.
However, there was always some time when she was sober, no matter how dumb she was.
Tang Yu had no chance to cheat her of her spirit herbs when she was sober, but then, she would provoke and remind her using her daughter's tale as a revenge for not giving her spirit herbs.