CDN, if I understand your question correctly, it's because they are two different companies. They are not equal and their share prices are not equivalent penny for penny.
If Lori did sell ~800,000 shares of SLI @ ~16¢ for the purpose of buying into the IGD PP, she would have freed up enough cash to be able to buy ~512,000 shares of IGD @ 25¢
800,000 shares of SLI represents ~0.7% ownership of SLI
512,000 shares of IGD represents ~1.9% ownership of IGD
So, if this is in fact what has transpired (and I believe this is the answer to your question), she would have effectively traded a 0.7% stake in SLI for a 1.9% stake in IGD.
Going forward, without even factoring in the options she would have acquired, SLI would have to outperform IGD by more than 270% for her to lose on this deal. With the 35¢ options, she would stand to gain even more with an increase in IGD share price.