At the end of next week, Wareing's alter ego Kirsty Branning is tracked down by estranged partner Max, who discovers that she has a nasty bruise on her cheek after returning to an abusive boyfriend.
In real life, meanwhile, Wareing recently opened up about her own experiences in two violent relationships from her past.
Discussing the upcoming EastEnders turmoil, the actress told TV Choice: "It's very, very easy for me to do stuff like this. Immediately, I'm thinking about what I went through. Doing those scenes, I went straight back into the thought processes of how I felt.
"Anything negative that happens to you in life can be turned into a positive as far as acting is concerned. You can draw on your experiences - it's far better than any research."
Viewers will see Max (Jake Wood) get beaten up when he steps in to protect Kirsty, but the frightening experience ultimately brings the pair closer together again.
Wareing continued: "She's still in love with [Max]. It hurts her to see him like this. It brings back all the old feelings and they go in for a kiss.
"Kirsty had already accepted that their relationship was over - she'd gone back to her old life and was getting on with it. So all this really comes as quite a shock."
The 34-year-old added that she is pleased with the way fans have reacted to Kirsty since her arrival on Christmas Day.
She said: "I was expecting hate mail, but I haven't had any so far. I got a lovely card with a retriever on the front, which is funny because I've got one at home. Would I go for a drink with Kirsty? Yes, but I don't trust her at all!"