I've seen this pointed out elsewhere, but MJ really needs to stop being so damn obsessed over Gwen. She texts Gwen 17 times despite getting no response and Gwen herself even comments that she's expecting a spam of messages from her the second she gets back despite not even being late for band practice:
She is literally the only one who did this - her dad and her other friends gave her space. I doubt the author's going to do anything with this so it just comes across as weird, especially since Gwen seems to realize MJ's overbearing behavior (she mentions it semi-frequently in narration) but never comments on it aloud or even calls MJ back when she returned to Earth-65 briefly. When Lana/Bombshell spam texted Miles it was treated as her having a massive crush so this just looks odd if that wasn't the intent; especially since MJ is dating her other bandmate.