How to best respond to an early black Qa5 in the Smith-Morra gambit? I often play the Smith-Morra gambit.  Recently I've been seeing black play an early Qa5, such as

[fen ""]
1. e4  c5 2. d4 cxd4 3. c3 Qa5 4. *


or

[fen ""]
1. e4  c5 2. d4 cxd4 3. Nf3 Qa5+ 4. *


It seems to throw a spanner in the works as to how I'm used to playing this opening.  If met with 4. Bd2 then black can play 4... Qb6 hitting the unprotected b-pawn.  It seems like black can bring the queen out early without the possibility of white chasing it around the board.


  Question: How to best respond to an early black Qa5 in the Smith-Morra gambit?


Chess Opening Secrets Revealed suggests playing a later Bf4 depriving the queen on the c7 square, then play a3 followed by b4.  But this seems like an awful lot of non-productive moves to chase the queen around, especially when you can't fianchetto the dark squared bishop.

Crafty suggests 1.e4 c5 2.d4 cxd4 3.Nf3 Qa5+ 4.c3 Nc6 5.b4 Qc7 but this seems to just weaken the pawn structure, and make the white's thematic Bc4 more difficult to play.
I don't see why you can't just ignore the Queen on a5 for now and play Nf3, followed by Bc4 and 0-0. Then, there is no pin on the c3 pawn anymore and he must take on c3, after which you retake with Nxc3 and you're back into a normal Morra gambit position with his queen oddly placed on a5. If he doesn't take on c3, then you just take back on d4 with a large center. You are not forced to stay in Morra gambit territory forever if there's a better line you can play.