Advice

Just go I know how it can be ! She might want space but ask there’s no wrong in asking my mom lost her baby before mine came and I felt bad but she admires him in memory of hers ! It take time to recover from but the last thing you’d want is to think she wants space and she needs comfort and support just ask 🤍

I’m so sorry for her loss, it’s the most heartbreaking experience for any mom.
I’ve been around people who had stillbirths as I experienced losses as well before my second baby was born. And I would say ask her if she feel ok with you coming to visit/help with your baby, perhaps ask her in a text message so she can have time to respond and collect her emotions and not have to show if she doesn’t agree with it. Don’t take it personal if she would not want to see you around either too much, as you might trigger the memories of her pregnancy and the fact that your baby is alive and hers died.
Make sure to check on her in a way she feel comfortable and remember her baby by name (sometimes people don’t do that for fear but is what the mom needs, remind the rest of the family too).
It’s a good thing that you’re there to support her, sometimes she won’t know what to ask for so just offer specific ways to help, grief is an all consuming thing and it would be a long time until she can recover