Would you tell me your opinion concerning the interpretation of the expressions in bold in the following sentences?
I have always been convinced that if a woman once made up her mind to marry a man nothing but instant flight could save him.
Back in 1938 I started to study nuclear physics. Torn between two loves, science and literature, I could not make up my mind which field to choose. (R. E. Lapp, “Atoms and People”)
“But I oughtn’t to conceal from you that I don’t feel inclined to accept the Master’s kind invitation.”
“Don’t make up your mind yet.”
“I’m very much afraid it is made up,” said Jago. (C. F. Snow, “The Affair”)
My mind is made up, and that’s all there is to it. (E. Caldwell, “Jackpot”)
make up one’s mind = decide between alternatives, come to a decision
Thanks for your efforts.
I would say that your interpretation is generally correct, but that the decision is not necessarily based on o choice between or amongst alternatives.