"In addition, the Young Master's personality is inherently obstinate. Once he sets his mind on a goal or decides on something, he never changes. I can tell that his feelings for Ms. Clark are more than just liking her; he is committed! With the Young Master's nature, now that he has committed to Ms. Clark, he will certainly not give up easily."
He looked at the authoritative old man on the hospital bed and continued, "I know what you are worried about, Old Lord, why you refuse to relent and accept Ms. Clark and the Young Master being together. I am also concerned about the Young Master's safety, but I am even more aware that without Ms. Clark, the Young Master will immediately be in danger."
It's not the danger from the outside, but the risk posed by the flaws in the Young Master's personality.
Once he loses Ms. Clark, with the Young Master's personality, who knows what he might do.