Hyperlite packs tend to be great if they fit her and you can easily find them in multiple places...
Rock and Snow in New Platz has Cilo Guide 30l in stock... I personally have that pack and really like it.... The amount of strap attachments is a little silly but they dont add much weight so its not a big deal... Carries really well... even though its advertised as 30L pack fully expanded it is 40L pack ... The other option would be to look at Osprey Mutant 38 - carries well and of a similar size to cilo 30L