The next day, council staff visited the property and informed Ms Thompson the actions were illegal and asked for the branches so they could assess a "limb value".
Ms Thompson refused.
"I was within my rights. I asked them to get it in writing, what they wanted to do."
On Thursday this week, Ms Thompson received an email advising that council staff, with assistance from police, would perform a search warrant on her property.
"They are making criminals out of ordinary people," she said.
"My mum was prepared to be arrested."
Ms Thompson said if the tree had fallen on her house, she would have been responsible for cleaning it up and paying for repairs. She questioned why she could not have the same responsibility to modify it to protect her home.
"It's a joke. It's only the council's tree when they want it to be."
Ms Thompson's mother Margaret Buchanan, 79, bought the property in 1991 with the intention of removing the tree at a later date - as it was not protected.
The change in the tree's status in 1996 was not notified to the family, Ms Thompson said.
The family contacted councillor Murray Guy, member of the tree management sub-committee, who said he asked council staff to wait until a meeting could be held between all parties.
Cr Guy said he was informed yesterday the warrant would be held off until a meeting, which was scheduled for Monday.
Fellow sub-committee member and councillor Terry Molloy said council reduced the city's mature tree stocks on private land because of issues with residents. But this reduction meant it was important to protect the trees "as much as reasonably possible".
"We are generally prepared to work with anyone who has a problem," Cr Molloy said.
"I'm sure we could have found a way to come to a positive conclusion for both parties."
A Tauranga City Council spokesman would not comment on the matter while it was an ongoing investigation.