who are widow douglas and miss watson in Huckelberry Finn?Briefly explain their role in the novel?

Widow Douglas is the widow who takes Huck into her home and tries to "civilize" him. It is her home that he leaves when Pap kidnaps him and takes him to the log cabin.

Miss Watson is the sister of the Widow Douglas. She tries to teach Huck how to read and write properly. Jim is her slave. He runs away from her after hearing that she wanted to sell him to a trader from down south.