I would not bother getting her above lvl 30 and then bustying her to Light/Green
265,165 for 1-50 Valk
1,663,863 for 1-70 Greater Valk
190,542 for 1-30 Warrior Rose
That gets you a VERY nice leader/sub. But I agree wholeheartedly, no reason levelling a light monster should be so fucking...