The actress, who plays Kat Moon in the BBC One soap, took a three-month break earlier in the year after she cancelled her wedding to Vince Morse.
Bosses gave her the time off to get over her split. Friends have now told the Sunday Mail that she is feeling "100 per cent" better and is looking forward to her return.
"Jessie has had an incredibly tough time but the break has done her the world of good," a source said.
Her temporary exit saw emergency script rewrites involving Kat going to care for her sick father Charlie.
Kat will be back on screen in about six weeks.