What does "a thousand-fold" mean in this sentence?
I protest, added my uncle Toby, looking up, as he protested it, towards the top of the ceiling,—that was I her brother, Trim, a thousand-fold, she could not make more constant or more tender inquiries after my sufferings—though now no more.
"Trim" is the name of the person that Toby is talking to; "she" refers to a woman whom Toby has fallen in love with and who has been asking him about an injury that he used to have. He is saying that she couldn't have cared more for his well being even if he had been her brother; but I don't get what "a thousand-fold" means in this sentence. Can someone rephrase?
The text is from the novel Tristram Shandy.