In this current update (0.44) there still no 3rd heart for Logan, also 2nd heart for Rhot, Korg, and 1st heart with Groth.
And for Trouble in den event. After you talk to Logan (in Normal Logan route) or Bernard (in Bottom Logan route), there should have something new appear in wolves den to explore. After that, go to check at Dark swamp and Misty abyss.