Sorry but all I can hear is the crowds at Cardiff rugby matches singing "my, my, my, Delilah ....why, why, why, Delilah" over and over.
I think your DD would get pretty sick of it to be honest. Also I think the bible connotations are pretty bad.
Personally I wouldn't, but then I grew up with an unusual name which I always hated (and eventually changed!) so I may be biased.