"Part of our job is to help support them through and get them back to their normal lives," Ms Lehndorf said.
The service stretches from Waihi to Whakatane and deals with about 200 new clients each year.
Clients appeared to be getting younger, Ms Lehndorf said.
"We have had a 24-year-old diagnosed this year. We see a lot of 30 and early 40-year-olds, certainly not your traditional 60-plus."
The service offers various support groups, information and help around the house and pamper vouchers in the first year of diagnosis. But it was support visitors who were the "heart" of the operation, Ms Lehndorf said.
The band of volunteers also included breast cancer survivors, such as chairwoman Fiona McAllister, who said the role was deeply rewarding.
"It's about talking to someone who's been through it. They have all these questions and we can help because we've been through it ourselves," Ms McAllister said.
Often women did not want to burden their family or were stressed about what would happen to their children and career, she said.
"It's very hard. You go through depression, anger, disbelief 'perhaps they got the diagnosis wrong' because most women diagnosed aren't sickly. It's about helping take some of that fear away."
Events like the high tea on September 16 and an Annah Stretton Fashion Night on September 12 were important to keep the service operating for Tauranga breast cancer patients, she said.
High Tea tickets were limited to 70 people and anyone keen can access more information at www.breastcancerbop.org.nz or email Ms Lehndorf at bcsstga@clear.net.nz.
Bella Vista high tea
September 16, 2pm
Bella Vista lodge, 1000 Ohauiti Rd
$30 a ticket - only 70 tickets