Do not lock her in the car, she will NOT be able to get out. Locking the car disables all internal opening methods, its very dangerous.
She should just be able to press the lock button inside and it will lock the doors and she will still be able to get out if she has to.
This does bring up a interesting question with CA
with normal cars you can press the lock button twice, holding it in the second time, and the internal sensors will be disabled.
People with CA, does you manual say how to do this with CA ???