Chizuru did the right thing in counter Mami: To Force Mami to confront and realize Her feelings for Kazuya as well as question whenever She had emotions or She's just simply an hollow, empty shell of a living corpse. Kazuya need to grow a Adamantium Spine and stop being such a doormat wimp while putting those who interfere with Him in their place.
That's what I've thought for over 2 years now. However time and time again she more so proves that she is just a hater, so I would say no. If she did it actually like him it should've happened a while ago when Kazuya was conflicted between choosing Mami or Chizuru.
There is currently 14 volumes released in English. Volume 15 and 16 will be released before the end of thr year. Each volume costs about $13, so it's roughly $182 if you want to buy the entire set