Viewers saw Nancy Osborne and husband Darren suffer the sad loss of their unborn child last month, throwing their marriage into turmoil.
Fox told This Morning today (April 26): "It went on for quite a long time when we were shooting - it was three or four weeks of quite intense stuff.
"But I was so excited, because it was some of the best scripts I've ever had. The way that it was written just felt really true, and it wasn't hard to conjure up that emotion."
She added: "[I've had] people stopping me on the street saying, 'You've told my story'. It's been overwhelming."
Ashley Taylor Dawson, who plays Darren, praised the soap's bosses for continuing to explore the story as the couple consider the right time to try for another baby.
He said: "It's very true to life and it's what people go through. It's nice that they're holding onto that and it doesn't just end there. It's an ongoing thing like any relationship, so it's just nice to do it justice. The feedback's been great."
Fox and Dawson are up for the 'Best On-Screen Partnership' prize at this year's British Soap Awards, which take place in London on Saturday (April 28).
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