"I was a little bit fatigued, but I just pushed through it," Lumsden shared after her win. "It's the last match, and when it's an occasion like this you just have to leave it all out there."
The 20-year-old played seven matches in total to claim the trophy, and dropped only two sets en route.
"It's been an amazing tournament," she enthused. "If you'd told me this would happen at the beginning of the week I'd obviously have been very happy. I've just had to take one match at a time, and I'm really pleased to get through a tough three-setter today."
Ranked world no. 376 at the time of her triumph, Lumsden will end the year at a career-high ranking. The 20-year-old has been encouraged by the progress of her British peers.
"I've known a lot of them since we were really young, and I saw them play at Wimbledon this year," Lumsden said. "I guess it inspired me to hopefully do that one day, as well."
She added: "My next goal is to keep trying to move my ranking up so that I can get into Grand Slam qualifying."
I think so. Onward and upward. Just imagine if she beats Caroline Garcia.
"If only we were amongst friends... or sane persons!" Janet Weiss
"I've only ever had one argument. It started when I was four, and I'll tell you when it ends" Maude Findlay (Bea Arthur)
"He's a very odd young man - writes books - and I - I have heard that he's a - a Communist!
Miss Jane Marple: Oh really, yes, well he must be rather lonely in Chipping Cleghorn."