Hey tokmom, as the resident 'liner expert' I fully agree with Ben's assessment (and also BigDave's).

To go a little further, the real sign that your liner was 'severely damaged' by the trichlor bits is if you see 'puckering' (a bleached out area with radial lines coming out of the middle). Even when they first appear, it's not necessarily a sign of imminent failure, just a reminder to start saving up for a replacement liner.

I honestly think that you'll get the standard 8 - 10 years out of your new liner

If you have any questions, please feel free to pick our brains.