The Brazilian actress joined the show for nine episodes to play the role of Grant Mitchell's new wife Carla.
"The producers were looking for someone who looked Brazilian but were surprised to a get a real one, I think!" Oliveira told the Sunday Mirror.
"It's very hard work but everyone has made me feel very welcome. Barbara Windsor has been so lovely, she makes me cups of tea and treats me like a real daughter. And Ross [Kemp] is really funny. We hit off straight away when I was called for auditions. There was an instant and very good chemistry. He has me in stitches all the time."
She added, "I really do hope they bring me back. It's a great role. For now I am busy with auditions for other TV work and you should see me in some theatre roles as well."