anyone else partly believe that in "lady of the lake" cora was being truthful when she was acting all kind to snow and emma?

i mean i remember i partly thought that after regina banished her through the looking glass, and she could see that snow and emma werent excactly friends with regina that she might've turned over a new leaf and wanted to help them. i now feel really stupid for thinking that but that was just my first thoughts after seeing the episode until cora revealed herself to be lancelot in disguise.