totally/really/completely exhausted oder dead on her feet. Oder bei Leo nachgucken!!

Übrigens:
Leo gives the expression "knackered". Sorry but when I was a lass I was always told that that was not a particularly nice expression to use (even if it is fairly common slangnowadays). I think the term ought to be used carefully as it may cause offence (for example to older Brits i.e. over 60's), OK?.

wiped out
knocked out
bushed
pooped
beat
worn out
drained
exhausted

M-W:
dead
2 b : very tired