To what does this quote refer? "The Widow Douglas, she took me for her son; the widow she cried over me....... and called me her long lost lamb"The...

In Mark Twain's Huckleberry Finn ,
chapter 1, Huck introduces the story starting with how he and Tom Sawyer found the money
that the robbers kept hidden in the cave, and how they both became very
rich.

However, it is a known fact that Huckleberry has no
adult guidance. His father is a drunkard, and Huck is seemingly terrified of him. For
this reason the Widow Douglas basically adopts him and takes him under her wings. She
tries to educate them and reform him, but to no avail. Among the things she tries to do
with Huck is to get him to quit smoking, to say his prayers, to have good manners at the
table, to dress well, and to quit being
mischievous.

However, Huck has other plans, he hides to
smoke, always dons his overalls and raggedy clothes, hates having to wait for prayers at
the table, and would never stop being a rascal, especially as long as he continues to
associate with Tom.

Therefore, what Huck is telling us is
that he is aware of all the things the Widow Douglas has tried to do with him and that
he is aware of the fact that she is taking the role of a mother for
him.