As well as treating myself to the erotic dancing classes I have also been wearing very expensive lingerie since my H left. It makes such a difference to how I feel about myself. Now I feel I'm 'worth' expensive lingerie irrespective of the fact that no-one besides me will see it. Maybe you could give her a gift voucher to go choose her own lingerie if you think you buying her some would freak her out.
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15