how old is my snake?

[Stefan-A]

I caught my female eastern??? garter in 2006 and she was 26ish??? now she is 28" her almost 2 yr old baby is 15, how old is she!

Sorry about all the joking before.

Like pointed out, it's impossible to tell with any kind of accuracy. Her growth rate and the fact that she has given birth can at best tell you how old she has to be at least. 2 inches in as many years suggests that she was an adult that had already started to slow down its growth rate, plus they usually reach sexual maturity at 2 or 3. Add the years and she's probably no less than five years old. How much more, is impossible to know.

If my conclusion is flawed, please jump in.