I listened to the most recent KSS radio show today (with Hashida Honoka, Nishizaki Miku, and Murakoshi Ayana), and they talked about Momo a bit.
Apparently Momo went to Honoka's graduation ceremony at Honoka's middle school, to Honoka's complete surprise. She brought roses to give to Honoka and congratulate her on graduating middle school.
Honoka said she never told Momo where her school was, and Momo said "oh, I just called up your mom and asked". Honoka replied "wait, since when have you had my mom's phone number?!" Apparently Momo and Honoka's mom have been friends for a while without Honoka knowing Momo also sent letters to other KSS members for Christmas by surprise.
I remember on another recent KSS radio show where a listener asked a question along the lines of "what do you have (a personal item, memory, etc) that you treasure in life", and Momo replied that she treasures her fellow KSS members. It's unfortunate that Momo has a generally bad reputation on ookami from many of the H!P or KSS fans that only watch Harodori, due to the way she strong-armed her way into the leader position of team Tamamushi. I guess she can be seen as strong willed and kinda pushy on Harodori, but it looks like she's really kind and generous in reality.
I'm looking forward to her Jitsuryoku Shindan Test performance!