I just turned 27, but I was 26 when I was initiated. I began my AI journey when I was 23. I don't recall there ever being an issue with my age; I hope you wouldn't have any problems either!
ADPiAkron, I don't know of any organizations that have age requirements for AIs. Similarly, not all of them have policies regarding how many years must have passed after a candidate's graduation to be eligible. I suppose the PNAM would have to check with the group she is interested in.
.....Kelly