But when she returned to the cobbles a couple of months ago as Kevin's blind date it seemed as though Jenny was a reformed woman.
However, the cracks in her character have already began to show with her unprovoked attack on Maria and mysteriously quitting her job to take care of Kevin's son Jack full-time.
After taking her opportunity to abduct the tot, a panicked Jenny takes him to a tower block.
However, Kevin, Sophie and Rita are hot on her heels and are horrified at what they find.
Arriving at block of flats, the threesome look-up to find their worst nightmare, an out of control Jenny holding Jack dangerously close to the ledge of a sixth floor balcony.
Knowing her plan has been scuppered, Jenny gets upset as she realises there will be no way of lying her way out of this, as she managed to do when she slapped Maria.
Crying, she moves Jack even closer to the vertigo-inducing drop, but will Kevin, Sophie and Rita be able to climb to his safety in time?
She said: "We may well see Jenny is enjoying the relationship with Jack a little bit more than she’s enjoying her relationship with Kevin. And then just when you think Jenny couldn’t get any more extreme in her behaviour she tells Jack they should go on a little adventure together. Just me and you, not them''