Police were called to the crash at the intersection with Pererika St at 11.19am and fire and ambulance services were also at the scene.
The crash caused a southbound lane to be blocked. Ruhi was initially trapped but after being freed she was taken to Rotorua Hospital with minor injuries.
Her son Hare Ruhi was scrolling Facebook at the time when he saw a Rotorua Daily Post article on the crash crop up.
"I noticed the colour of the car and thought it looked like mum's car.
"I rang her home and she wasn't here. I rang the hospital and they said 'are you looking for a patient?' I said 'yes I think my mum's in there'."
The hospital couldn't tell Hare what status his mother was in, other than to say she was "getting worked on" so he headed to the hospital from his home in Tokoroa about 45 minutes away.
"I was thinking the worst. I was thinking we might have lost our mother."
But the only injuries Puti had suffered were a deep cut on her finger, which needed five stitches, and minor scratches on her hands.
"I thought, how can that be after looking at the car. It was a huge relief," Hare said.
"To have her make it to 88 and get through a crash like that is something special."
Puti has to go to the hospital for a check-up next week but said her finger was not painful.
"Everything is perfect. I'm thankful I didn't break anything or die on the spot.