Not knowing the inteded use hurts somewhat, but a solid budget helps!
If you've got a few weeks, consider this: Order a complete Palmetto State Armory (PSA) lower, then on a separate order on a different day, a complete upper. Finish it off with a quality sight, magazines and a sling, and she'll have something that won't embarras her (providing her husband knows how to run one!
)
Quick and dirty pricing:
-PSA complete lower: $255 shipped + $45ish FFL fee = $300ish
-PSA complete upper: $435 shipped
-Quality rear iron: $150ish
-Handful of mags: $50ish
-Sling: $20ish
-Cleaning kit w/ CLP: $30ish
Grand total: $1000ish
[ETA: Beat me to it! A Colt under $1000 would be a no-brainer, if you can find one.]
(The "ish" accounts for rounding up, somewhat sloppily, to cover taxes, fees, and other variables.)