Her heyday was a little before my time too, yet randomly I have a recording of her win against ASV at Wimbledon in 94 on tape Aside from her return stance, theother thing I remember is how much she used to sweat - she'd be dripping in it
Even though she retired in 95 (IIRC) she had quite an "80's" game if you know what I mean. Slightly funky FH technique, more at home at the net. Grass was her favourite surface (wim final, two Wim doubles titles and I think she was in the final at Birmingham about 5 times) She also won Olympic gold with Pam Shriver in 88.
I agree with those who said she maxed her potential, which I certainly admire.
Here she is against Martina N in 1988. Martina made some uncharacteristic errors, because of Zina's play. Then Zina started, due to the pressure to serve out the match. She definitely had nerve issues. Then she tries some serve and volley. This was an exciting match.