The actress, 26, portrayed the daughter of Ian Beale for three years before she was murdered in a whodunit storyline which rocked the whole of Walford.
It was eventually revealed in the BBC soap’s 30th anniversary episode that she died at the hands of her ten-year-old brother Bobby.
Hetti made the remark about her former character when an Instagram troll commented on her snaps, which Hetti eventually gave in and replied to.
She agreed with one of his points, writing: “I’m glad Bobby killed Lucy too, I hated her.”
Lucy died after Ian’s youngest son Bobby hit her over the head with a jewellery box, which he was later jailed for.
The vile troll also called her a “trampy little w**e” to which she responded: “Dat me.
She said: “Seeing as you kindly comment on many of my stories I will now take the time to respond to each one.
“Firstly, this ‘posh white’ girl is aloud to talk in whatever way she pleases. As much as I’m very found of the English language, I’m free to use words as I see fit.”
She later added: “That’s nice that you would choose to ‘f**k me’. I however would strongly decline that offer.”
The actress went on to answer another point, which followers on her Story couldn’t see.
“LGBTQIA+ history is an extremely important part of education,” Hetti went on, defending a recent post.
“To believe otherwise is ridiculously problematic and homophobic.”
Hetti added: “Trampy sl*t? Fair comment.
“I do love gay men yes I also love straight men. (The ones who aren’t homophobic or sexist.)”
Her troll later apologised, with Hetti posting the message which read: “Apologies in any slurs I used towards you.
“In hindsight I was out of order. I don’t agree on all the LGBTQ but hey. That’s individual choice. Wishing you all the best and again sorry for being a d**k.”
Hetti wrote: “The response is in people. Not the best but at least he took accountability for the sexist language. However, equality shouldn’t be up for debate.”
Since quitting the soap, Hetti has starred in BBC drama Death in Paradise and appeared in gangster flick St George’s Day.
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