Quick summary:

Arranged to have a very small party at mine on friday night. Girl said she had a late-shift at work (finish at 9pm) but still wants to come, proceeded to get very flirty and we basically implied we would have sex.

Texted her this morning just to check what time she got off work, she replied saying "should I still bother if i would arrive there at 10pm?".

Is this a shit test? How do I reply? Is she no longer interested in sex?