Felmenia was extremely embarrassed,

Felmenia was extremely embarrassed, the answer was obvious.
“Isn’t it obvious? I will ask things that I can’t hear from you. Whether it’s about the summoning room or your weakness, I can’t overlook this discord.” (King)
“I-It must not be done! You can’t—A-a-Argh!!!” (Felmenia)
Suddenly, she held her chest and started screaming.
“Felmenia!? What happened!? Felmenia!?” (King)
The king stood at the throne watching this unusual event. Not only was her suffering unusual, she writhed on the floor and cried. Thankfully, it didn’t last long, and then she bowed her head again.
“Ah… Ah… I’m sorry… for showing… such disgraceful…” (Felmenia)
“What just happened? Is it illness?” (King)
“No…” (Felmenia)
She denied it. But, it certainly was something. She sweated and curled up in a ball, her face was pale like a dead man’s. Of course, I would have thought that it was an illness. But, I’ve never heard that she had an illness before. I reevaluate the situation. Her chest hurt. It was probably her heart. It was in the middle of conversation. When she objected, and talked about Suimei.
That would mean…
“Can it be, your weakness?” (King)