If you can't punish the telekicks on block why not make them whiff by putting out d4 and whiff punish them, also as long as Reptile has meter Mileena is afraid to roll or telekick, her ias's aren't that big of an issue, plus NOBODY wants to jump on Mileena in the first place.
Charlie2417 I use one of two options to punish tele sais:
1) Standing 1 ex ffb as soon as the sai is over my head. The timing is strict, but even if you don't hit the combo, you got a knockdown which is good for reptile.
2) If I can't hit standing 1 ffb, I just d4 and make the telekick whiff, and then punish with a full combo.