There should be some sticky in here about shipping plants the before treatment and after treatment.
What i mean by this is that when i send plants i always place the plants in water all the way and check for any thing that might look threatening. I encourage also that when receiving the plants, the person should do the same for that day or for a certain period of time to avoid this from happening.
Ultimately, one should have some sort of miticide...etc no matter what to be secure nothing will invade your plants from a day or 2.
That's too bad,
Just let me know when they would be ready!