Acokanthera Species, Bushman's Poison

My next door neighbour has a plant...probably about 6 ft tall. Smells wonderful now and we are in early Spring, in Cape Town South Afric...Read Morea. She doesn't know what it's called, just found it at a nursery quite a while ago. I have been hunting for its name and was given this as a probability by a friend's Dad who is a longtime nurseryman. I would describe the flowers more white than pink really. This particular bush is relatively protected from our harsh climate - with very strong winds, by surrounding bigger trees, which also provide a degree of shade. However, I believe it is quite hardy
anyway.

Here is a link I found about the plant: http://www.kariega.co.za/blog/bushmans-poison-bush