Abigail's hobby

Somehow the webtoon failed to explain further why Abigail is drawing as a hobby in order to draw dresses for Blanche, so I'm going to explain here according to the novel for those who are confused/haven't read it:

She just thought that people might find it weird/find her weird if she shows she can draw all of a sudden since the real Abigail have no such hobbies in the first place. So her plan was to pretend as someone who suddenly has an interest in this kind of hobby as a beginner and "slowly be adept" so she can finally draw dresses for Blanche.