MIL basically said she wishes I was dead today…

Just wrapped up an evening with the in laws. We are Canadian and my husband is part owner of a family farm that produces maple syrup, as it’s maple season we have to go out every day to collect the syrup and have started the boiling process. We didn’t have anyone to watch my 8 month old daughter today during collection (usually my parents or sister will watch her) so I brought her along and had MIL watch her while we went to collect as she normally just rides along to help on the side by side anyways, and I wasn’t up to doing it while baby wearing. Anyways, my daughter was about due for a nap so they played a while and then MIL held her as she slept, no problems I even thought it was cute how comfy my daughter looked all bundled in her grandmas arms. Generally her and I don’t have issues, she can be a bit overbearing sometimes but is very loving and kind. Later after dinner she was comparing her nap time cuddle session with my baby to show a grandma that has to raise her daughters baby after her death, she says how she was in heaven and I quote “I would love for that to be me” Am I out of line for thinking that essentially what she said is that she’d love for me to be dead/out of the picture so she could raise my baby?? Did I misunderstand? She brought it up twice and both times said how she wishes she had that experience… Idk I’m just having a hard time on this one, it really didn’t feel right to me. Was the comparison because we were on the farm? The show she was referencing was a Yellowstone spinoff. I didn’t say anything but I’m feeling like I should’ve clarified. She sees my daughter quite often, at least weekly if not more, and every time she sees her I don’t really interfere except for enforcing rules around safety. She gets lots of baby snuggles. That said I won’t be going for the maple collection the next few days and will be keeping baby with me because when I brought it up to my husband even he could see how weird it was for her to have said that.