The whiff timing is still tricky but you can still time it too early and hit them too high for the second dp+a to connect. Some players such as Bala and Pako like to use a micro dash to help with the timing from time-to-time. You can play around with these techniques but do what's most comfortable for you.
Speaking of Pako, he did a bunch of sets last night (Friday, Jan 03) so there's a lot of good Elisabeth footage here.
http://www.twitch.tv/layex/b/492441922I also want to note that he has a sick side swap combo off of her EX command grab.
EX Command grab, qcf+K, EX Etincelle
I haven't played around with the combo yet but he does the qcf+K to side swap and then quickly cancels into EX Etincelle. I'm going to assume you'll need to input the EX Etincelle in the opposite direction that you're facing. So it should be a smooth qcf+K, qcb+PP motion. I'll post it up on the wiki once I've got it down as well as the stun and damage calculations.