So the cricket was close to the young T in size, I changed my mind and tried to remove it immediately after throwing it in, the cricket jumped and landed in front of the T, Jenny immediately pounced but the cricket was thrashing bad and they ended up upside down. Jenny finally landed a bite!
Ts are fearless. They will challenge and take down a bigger prey. Just make sure this does not happen during a premolt should be fine. I do not like to feed my Ts with small prey which does not give them much of a predatory instinct and training.