Many people on the Square were affected by her untimely demise, but it's someone very close to her who will hit rock bottom.
SPOILERS AHEAD
Just before she was murdered on Good Friday, Lucy's dad Ian discovered she'd been using cocaine.
Now her twin Peter reaches new lows as he struggles to deal with her death, turning to drugs himself.
It's been reported that, as his 21st birthday approaches next month, Peter really can't cope with his grief.
But it has been confirmed by an EastEnders insider that Peter's drug use will be a one-off bad decision, and won't turn into a problem.
As viewers know, Ian was, unsurprisingly, not best pleased to discover his daughter was using the class A drug. Finding out about Peter's slip-up could push him over the edge.
Meanwhile, next week will see the arrival of market trader's name calendar, and Sonia is not happy with the outcome.
When she see's her picture in the calendar, Sonia can't control her insecurities and rips out the page.
Eventually she admits to Linda that she doesn't think Martin loves her anymore.