I wish you well. Karma only means "action" and in Hindu and Buddhist thought, the concept of volition is added, so it is an intentional act. Karma has two halves, action and result. If you toss a pebble in a pond, the result will be ripples. This is all that karma is. If it helps though, here is what the Buddha taught about karma, maybe you can find some point in it to argue:
From "What the Buddha Taught" byWalpola Rahula
The Pali word kamma or the Sanskrit wordkarma(from the rootkrto do) literally means ‘action’, ‘doing’. But in the Buddhist theory of karma it has a specific meaning: it means only ‘volitional action’ not all action. In Buddhist terminology karma never means its effect; its effect is known as the ‘fruit’ or the ‘result’ of karma.
The theory of karma should not be confused with so-called ‘moral justice’ or ‘reward and punishment’. The idea of moral justice arises out of the conception of a supreme being, a God, who sits in judgement, who is a law-giver and who decides what is right and wrong.
The theory of karma is the theory of cause and effect, of action and reaction; it is a natural law, which has nothing to do with the idea of justice or reward and punishment. Every volitional action produces its effects or results. If a good action produces good effects, it is not justice, or reward, meted out by anybody or any power sitting in judgement of your action, but this is in virtue of its own nature, its own law. This is not difficult to understand. But what is difficult is that, according to karma theory, the effects of a volitional action may continue to manifest themselves even in a life after death.