>>2292927She's not doing it intentionally anon. She has no way of knowing about the shit Homura has been through for her sake until the very end of the show when she obtains omniscience and sees it. Then she fades away for eternity.
Then in Rebellion, her memories are fucked up by the stasis field Kyubey made, and, once again, the only time she remembers is seconds before the universe gets blown up, and her memories get locked away by Homura in the new world she makes.
I think she'd love her more than anyone else. She even stated at the end of the show that she was her best friend. She's just not had the chance, because whenever she's around her memories are fucked up.