Here are a few things that come to mind.
I seem to remember those as having laminated limbs. Look carefuly at all the glue lines, before and after you shoot it. If things start to get a funny buzz while shooting check again. Delamination can be a problem if the bow was stored in high heat like a trunk or attic. If the limbs have plastic pivots you may want to keep an eye on those as well. I had one break on an old Browning Excellerator of about the same vintage, they may have shared some design ideas at that time.
Using the same discriminating eye look over the cables and teardrops for any sign of fatigue.
Change the string, and don't use any sort of Fastflite type strings. Along the same lines you might want to go easy on the light weight arrows and tips that are so popular now. The above mentioned items would be akin to dry firing when that bow was made.
You could do like hundreds this fall, get her out shoot it and see what happens. Kill your deer, hang it up, and repeat as needed.
