What if we aren’t strong moms?

I work at my friends shop here and there to help her out. I’ve been there a lot recently because of COVID we take extra precautions and also because she was pregnant. Anyways, she is not even 1 month post partum and she’s back because she didn’t like how the store was running (she watches us on the cams). On the day she came back one of the employees called off. He told me and the manager that he had anxiety so he was taking a sick day (which btw was fine by the manager). She came in and gave us a speech about how bad we were running the store and then she told us her birth story and how it was 1000x more horrific than having a little “anxiety”. She is also my friend so she was telling me her birth story too and her horrible c section. Honestly it sounded horrible and she told me she was in so much pain. I asked her why she even came into the shop. We obviously we’re running it while she was gone. She said she knew things weren’t too her standards and she had to come and fix everything. I’m 7 months pregnant and she told me if I even dared of taking days off or being out longer than a month when they baby came she would remind me how strong of a mom she was because even though her cut had bursted open she would still be at the shop. This upset me because I’m doing this to help her shop. Not necessarily because it’s my career or anything. Also she keeps telling her story to everyone and talking about how strong she is. But what if we are not strong like her? What if we don’t have a pain tolerance like her? Is it really that selfish to want to take the full maternity leave just to heal and be with your baby? I’m not sure why someone else’s ability to get up and do things should make everyone else feel bad?