Out of the 1000 scenes published with Sandy, there were two which had an actual blowjob (and a few handjobs).
One of these was a interactive show called "Adventures of a gardener" starring her with Puma Swede.
Sadly, this seems only to exist in 360p.
A part of the scene was also used for a 21Sextury compilation called "Sandy with cocks", which was published in 1080p but the material seems to be upsampled.
Here is the deal:
Working folder of "Adventures of a gardener" - all files - 360p
720p upsample of her bj
"Sandy with cocks" compilation 1080p