My girlfriend said that if she loved me, she would prove it with actions, not words. What is action?

It is better to do something that loves her than to say a thousand words that love her. For example, if she has a cold, instead of telling her to drink more hot water and wear more thick clothes, all boys will say this. You'd better buy the medicine and send it to her. Love is first love, then love. Love is a thing. She's in love with you, and you did it for her. She will fall in love with you if she is moved.