Is it me or her ... Mother in law 😒

Courtney • 23. 1st time Mommy. Awaiting JT 👶🏽🎀 5/15/16
So lately my MNL has been getting on my last nerve . Everything she does annoys me & im annoyed even more when my husband acts like a mama boy & caves into evything she says . Today our baby shower invitation came in ( sent them to her house only because we wouldn't be home and didn't want to leave them outside ) ... She fuckin opens them . I asked my SO why did you / she open them .. He goes " oh because she wouldn't to  see them " uhh who fuckinn cares . I told her several times they were coming she didn't even have to open them . He says oh it's not a big deal , the plastic is still on it & everything . She just opened the box 😒 but I don't care . I wanted to be the first .. This is just one of many annoying things . Do you all think I'm being over the top or is she just being a fuckin mother in law ?