Stimson Python

[Reinz]

Being 6 yrs old I figured that she was at least a meter in length.

Assuming that you have a proper sized rat, as Jclaiborne is getting at, I have found three more things are important to your feeding success:

Proper heat
Scenting
Temp gun (May be called I/R Temp Gauge over there, I know guns can be a touchy subject) Can be ordered on Amazon for under $30 U.S.

When your rat is defrosted, run your hot water as hot as it will get and rotate the rat's head and neck only under the water.

Until you get your temp gun, do this for about a minute. You want to get the head between 35 and 37 C. It will cool a bit when you get to the snake and scent.
Only do the head/top of the neck, you don't want to start cooking other body parts, while minor, it would be breaking down tissue.

Next, hold the rat with your hemostats and gently wave it near the vents of the enclosure. This is before opening the enclosure. If need be, use a hair dryer and blow hot air in her direction.

This should act like a dinner bell, especially if she is hungry.
She will come out perky, looking all over the place. Very excited.

Open the enclosure and slowly move the rat around and try to make her come to it. You may have to pause or sometimes even bump their nose. But so it moves, by jiggling or waving motion.

If this doesn't work, being an adult, don't be afraid to do tough love and wait a month or 6 weeks. Maybe she is not hungry.

Best