When her ex-husband and the love of her life is killed by a vicious drug-manufacturing motorcycle gang, a letter-of-the-law undercover cop infiltrates the gang but must battle addiction and her moral code especially when her estranged 10 year old daughter is kidnapped by the gang.

Great, so if the ex being killed is the inciting incident better to call him the love of her life as this is in fact what drives her not the fact that he is her ex.

Now what would be a good goal for her to pursue as a result of the killing that will resolve her problem?

Wow to much going on. You need clear Protagonists. Logliner Code of Structure.
Avoid cliches and coincidence.

yes and the i.i is the murder of her ex-husband. the other things ARE part of the main plot of the story I will tell but should not be included in the logline by the sound of things.