Hi Kate
I had similar surgery to you. And was 32 at surgery.

A little over a third of my tongue was removed. I was told not to expect too highly in terms of speech.

At first i couldn't string words together and didn't expect to ever properly get back to all aspects of my work (occasionally ran training sessions, and sang as well in my "other" job).

It all came back though, and each "first" (first training session, first gig etc) was awesome.

So, be patient, your body will sort itself out and you'll have a bunch of great moments to look forward to!

Best
jon