Under acceptable conditions the lifespan of most seahorses would be 5yrs to 8yrs and sometimes more.
Being that most of the seahorses showing up here in Canada are about 3 months old when they get here, then that female is at less than half of her life span.

I am not sure about the seahorses brought into BC - but alot of the ones we have gotten here in AB over the last few years have been a hybrid from a vietnamese breeder. From the photos yours looks very similar to the ones we got here. A cross between H.kuda and H.Reidi if thats possible. They have characteristics from both but just not quite right for either.

Just another possibility - can't confirm one way or the other by the photos.

Another possibility is H. taeniopterus, which are very similar to H. kuda. I bought Kudas that ended up being taeniopterus.