Emma Jones passed away after suffering a serious head injury while riding her moped to work.
The 19-year-old was taken to the Royal Preston Hospital on July 3 last year in a critical condition but later lost her fight for life.
A few months before the tragedy, the care worker, who hoped to become a vet, had registered to become an organ donor.
Her mum Beth, of Fleetwood, recently received a heart-warming letter from a woman who had received some of the vital organs.
The woman told her how Emma had effectively saved her life.
Beth, 41, who has a younger daughter, Jamie-Lee, was speaking after a 57-year-old driver was given a community order last week after admitting causing death by dangerous driving following the crash in Lancaster which claimed Emma’s life.
Beth said: “I received that letter in December and it was just like a Christmas present from Emma.
“The lady had received Emma’s kidneys and pancreas and she told me how sorry she was about our loss, but that some good had come from it. Without that operation, she would have needed dialysis treatment for the rest of her life and would have had to take drugs every day, however long she had lived.
“She explained how it had transformed and even saved her life. It was a really heart-felt letter.”
Emma donated five organs and they have all gone to recipients.
Beth added: “Emma was a very caring person, she really helped us to get through a tough time when my dad passed, and she was really close to my own mum. Even though she isn’t here any more, she is still helping people.”