130mills, is that 3.3 cm ?
5", is that 12 cm ?
The maximum length of the I2C bus is 10 cm if you do it wrong according to the official standard UM10204.pdf paragraph 7.5 page 54.
The maximum current (sink current to pull a signal low) is 3 mA. Therefor your 1kΩ is too low. I prefer to see the schematic and see that resistor myself.
I wrote before: "Can you start all over without the I2C bus ?" and I wrote "... I think that you have no idea how much trouble you are in".
I was not joking when I wrote that. You do not have a lot experience with the I2C bus, and everywhere we look there is something wrong.
I'm also 99.9% sure it is not a hardware issue. But that does not mean that you can look away.
Let's start at the very begin. Do you know if the SAMD21G18A processor can be a reliable I2C Slave when using Arduino ?