my 2c
Hi Oveur
Sorry to hear about your situation. It's not something i would not even wish on my worst enemy !
It is important that your girlfriend/wife supports (or at least tolerates) your decision to fly for a living. If she cannot support you being away for the training - will she be able to cope when you are a full-time pilot - away from home for long periods ... ?
I cannot tell you what to do, though - YOU have to decide. But being accepted at 43 is an amazing opportunity. I for one would sacrifise a lot for that !