Storey, who has 10 gold medals in all Paralympics and three so far in London, can match Grey-Thompson's British record 11 golds in tomorrow's road race.
"She's been such an amazing athlete for years," Grey-Thompson told BBC Sport.
"It's good for her and for cycling that she's going well. With two track and two road, it's a pretty tough schedule."
Storey won gold today in the C5 time trial.