they are dull, but agree with welliemum - try them in different time signatures.
also, practice them in different rhythms, dotted for instance, or to the rhythm of tunes - e.g you can play one to the rhythmn of Greensleeves, or the Match of the Day theme, or whatever. Practice them loudly and softly, with crescendos and decrescendos, very staccato, very legato.
Depending on how advanced she is (cos it's quite complicated), she can also practice them going up in thirds - e.g for C major, play C-E, D-F, E-G, F-A and back down as well (C-A, B-G, A-F etc.) (if you can follow that!), or in triplets like this: CDE, DEF, EFG, FGA and so on. (this also has the advantage of improving your scales because they seem SO much easier when you get back to doing the easy, straight way)