Question about my mother in law...

I am new here and I hope you guys are doing well. I've been married for 4 years(ttc with no kids yet) and my sister in law is pregnant and due in 2 months. My mother in law is throwing her a baby shower in 2 weeks. But she hasn't asked me to help her. I know through my husband that she's planning it and even asked her other son's ex wife to help her look for a venue. Should I be concerned about this? We're not as close as she and my other sis in law who she's throwing the shower for. What do you guys think?

I have in the past cried to her about my frustrations of not getting pregnant, so I don't know if she's sparing me or what.

Thanks,

TTT in her 30's