They should have done this food challenge thing later so we can see what the HMs are normally like. Sandra might get evicted because she's not doing much because of her caffeine withdrawals.
I don't really agree with this as we've seen more of Sandra than some other HMs and It's clear from the glimpses we've seen on the daily shows that she's involved in the house.
It's just unfortunate that she just hasn't been falling off chairs or rapping enough to get her a bigger spot on the daily shows.