What are some elements in Emma that could justify some critics of suggesting that Austen is a liberal?

Critics who speak ofas a liberal, in the same vein as they
speak of Charlotte Bront« as a [literary] liberal, often refer to for
analysis, yet there are some identifiable elements of liberalism in
["liberal" here opposes the idea of literary conservatism that Marilyn Butler and
other critics of the 1970s Oxford school of literary criticism thought of as in keeping with the
conservative literary establishment (canonical works) and Tory tradition (Blackwell].

Liberalism can be seen most sharply in Mr. Knightley's actions toward both Harriet
Smith and Robert Martin. Though Robert Martin was a tenant farmer, Knightley genuinely respected
and trusted him and assisted him in making a success of his farm. This was far more than
lip-service because Knightly extended great personal and financial liberality to Martin, which
some found at least surprising.

"His rank in society
I would alter if I could, which is saying a great deal I assure you, Emma."
(Knightley; Vol....