How do I make safe warding trips as support against enemy Evelynn?

I do understand that warding enemy jungle or river (if there is rift scuttle yet to be killed) can be effective for locating , but those warding trips themselves are not really safe too.

I find that waiting for all 3 conditions to be met before going on a warding trip is too unlikely to keep wards up:

1. enemy to show up on the map when she ganks another lane
2. enemy mid not being mia
3. ally adc not in position to be towerdived (a.k.a. when lane isnt pushed into tower, which rarely happens if my adc knows better to not push lane when might be around)

and ofc, asking my teammates to buy pink wards to get more vision isnt a solution in my elo (silver 3)