Call this?

[kurto]

Table Table 66590 (Real Money) -- Seat 7 is the button
Total number of players : 9
Seat 1: MAC0308 ( $19.75)
Seat 2: CaliPrncess ( $19.75)
Seat 3: UdaaMan ( $24.75)
Seat 4: Kurtovski ( $75.33)
Seat 5: Dreds2c ( $2.05)
Seat 6: p2shan ( $25)
Seat 7: ajpmd ( $22)
Seat 8: GraceSA ( $20.95)
Seat 9: icats ( $20.13)
GraceSA posts small blind (0.10)
CaliPrncess posts big blind (0.25)
p2shan posts big blind (0.25)
** Dealing down cards **
Dealt to Kurtovski [ 9s, Kd, Qh, Jh ]
UdaaMan calls (0.25)
Kurtovski calls (0.25)
p2shan checks.
ajpmd calls (0.25)
GraceSA calls (0.15)
CaliPrncess checks.
** Dealing Flop ** : [ 8d, Td, Ks ]
GraceSA bets (1)
CaliPrncess calls (1)
UdaaMan folds.
Kurtovski calls (1)
p2shan folds.
ajpmd raises (6.45) to 6.45
GraceSA raises (19.70) to 20.70

Based on watching the player for a while, I firmly put Grace on a set. Do I call this? And does it change if there aren't 2 diamonds on the board?