Who is Ella from Love Takes Wing and what is their importance?

Ella is the young maid who shows Belinda to her suite when she first arrives at Marshall Manor. It is also Ella whom Mrs. Stafford-Smyth employs to fix Belinda's hair on the night of the dinner party. Ella is also the one who explains to Belinda that her low cut dress is supposed to look as it does. She tells Belinda the dress is very attractive.