The former Coronation Street star was cast as Mitzeee Minniver's (Rachel Shenton) sister Maxine in September, and makes her debut in the soap next week.
Maxine makes her return to the village five years after running off with Mitzeee's fiancé, meaning that she receives a somewhat frosty reception on arrival.
Sanderson told MSN: "[Maxine] just turns up and expects a cuddle - let's just say she doesn't get a cuddle."
The 28-year-old also claimed that she was at pains to make the confrontation as realistic as possible, revealing: "I said to Rachel to actually slap me, because I feel with a slap sometimes it can look really eggy if you move your head and you've not really been hit.
"I said to her, 'Don't give it 100%, maybe 50%!'"
Sanderson also promised fireworks from Maxine in upcoming episodes of the soap, saying: "They've given me such a wonderful way of coming into the show, it's fantastic. She just literally lands in the middle of Hollyoaks and decides to pretty much con everybody that she meets on the way through."
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first look screenings at 7pm on E4.