Tattercoats by Flora Annie Steel illustrated by Diane Goode

When a lord loses his daughter as she is giving birth to his granddaughter, he despises the granddaughter.  He ignores her and leaves her in poverty.  She spends her day with a crippled gooseherd.  When the king gives a ball, the granddaughter travels with the gooseherd to the ball and encounters a kind, wealthy man.  Her destiny changes at that moment.
-Borrowed from the library.