Tracy (Kate Ford) has set out to destroy Kelly's character Becky in recent weeks, falsely claiming that the feisty blonde caused her miscarriage by pushing her down a set of stairs.
Fans of the soap know that Tracy is lying as she actually lost her babies the night before the incident at Becky's flat, which saw her slip down the stairs accidentally following a row.
However, Steve (Simon Gregson) has chosen to believe Tracy's version of events, despite her history of lies and manipulation.
Kelly told itv.com: "It's like Steve has just lost his memory. Everything that Tracy Barlow has done to him over the past seven years, long before I was even on the scene, has just been wiped and he now believes Tracy.
"Tracy says that Becky pushed her down the stairs, she says that she didn't - and he believes Tracy. Come on!"
This week's Coronation Street episodes see Becky step up her attempts to clear her name, asking Gail McIntyre (Helen Worth) for help with breaking into Tracy's records at the local medical centre.
Reports have suggested that Becky will eventually get the proof she needs, but Kelly kept tight-lipped over what is ahead.
She said: "The end is nigh. Will she get the medical records? Will Gail help her out? Will Steve believe Becky over Tracy? Just keep watching and then you'll find out, won't you?"
Becky's final Coronation Street episodes air on Monday, January 23 at 7.30pm and 8.30pm on ITV1.
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Watch a preview of tonight's Coronation Street double bill in the video below: