Mad Malice. Malice, #15

Angry at being left alone to cope with the enormous fortune Alice left her, Kathy has to learn to deal with business, family, and a blackmailer who is certain he has her over a barrel.  Dealing with the life she now leads, she doesn't realize until it's too late how much Alice and her "lessons" have influenced her and her reactions.  "Accidentally" killing her blackmailer leads to being a target by his brother with the apparent backing of the L.
A. P. D.  Being in their crosshairs, she realizes she has to change her strategy as life seems to get away from her, and the enormity of it all may come crashing down on her and her family.