Going to add my original thoughts from this morning when I was on my other computer.
I don't know if the shirt is of any use to you guys.
Dolphin stats
Miami Dolphins Jersey #32
32 - Benny Malone (1974-8)
32 - Tom Vigorito (1981-5)
My hubby is into the Dolphins, I mentioned these 2 names to him, he's never heard of either of the 2 guys I posted. I'll have to see if I can dig up more when he gets back. IMO, the Jersey will probably identify a few possible states she's been in. My hubby says #32 is one of the Running back's, so I'd have to see if I could figure out which one was notable enough for a shirt.
It's very hard to find Dolphin's stuff where I'm at. My guess would be that back in the late 80's you'd have to be in one of the Southern states to buy one unless the Phins were playing in another state.