Camellia sasanqua

Me again!  My friend has a Camellia sasanqua in a pot by her front door.  It's quite small (18inches high x 20 inches across) and it's been small for the last year so it seems slow growing.  I'd like to find one for me but all the ones I find seem to grow to great heights.  My friend's has single pale pink flowers which are scented and very dark green leaves, quite a dense, small shrub.  She hasn't kept the label so can't remember which one she has. Can anyone think which one it might be or can anyone suggest a small, slow growing sasanqua that might be suitable? Many thanks.