Who is Homare trying to kid? All it's going to take is one heart-broken expression on Shion's face when Homare reveals her plan (which is next chapter's meat & potatoes) & Homare will crumple. She already took a risk & made careless mistakes out of worry for Shion when she drifted away to the Bat Island, so I can't see her getting hard-core & cold-heartedly leave Shion now.