I don't think any of them sound good, because I don't think you're using the right verb here.
You don't choose while your head is buried like an ostrich – you search. You scavange, you hunt, you scrounge. Then, ultimately, you choose from among your findings – but not while your head is still in the drawer.
Mary had her head buried ostrich-style in her drawer, scouring for a few date-worthy clothes.
However, if you insist on choosing, you don't need any preposition at all:
Mary had her head buried ostrich-style in her drawer, choosing a few date-worthy clothes.