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AIBU?

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AIBU to be super upset MIL kissed baby with a cold sore?

27 replies

KLDL · 20/04/2026 21:26

I went to my MIL’s house today with my 5-month-old. She has always been quite OTT with the baby and has crossed boundaries before – for example turning up at our house with a cold and still holding the baby when I said I wasn’t comfortable, and even when baby was only 6 weeks old she came over with obvious cold symptoms, wore a mask incorrectly and still insisted on holding her. When baby was born she also told the whole family before we were even out of hospital, despite my husband asking her not to.
Anyway, today we went over for lunch. As soon as I arrived she said she had a cold, and I could see she also had a scabbed cold sore. For context, cold sores are caused by the herpes simplex virus (HSV-1), which can be extremely dangerous for babies – in rare cases it can lead to serious infection affecting their skin, eyes, or even organs, and can be life-threatening.
I pointed this out before she held the baby and specifically said please don’t kiss her because of the cold sore. She seemed horrified and reassured me she wouldn’t.
An hour later she tickled the baby and then kissed her tummy. I wiped it when she wasn’t looking but didn’t say anything (which I now regret). Then about 10 minutes later she kissed her properly on the cheek. I immediately challenged her and she just looked confused and said “yes, why?” I reminded her again about the cold sore, took the baby back and wiped her face and skin.
On the way home I noticed baby had scratched her cheek and had a small cut, which has really worried me in case anything could get into it. I took her straight home and washed her.
MIL has early dementia / mild cognitive impairment. We would never leave the baby alone with her anyway, but she does get annoyed when I take the baby back to change or feed her as she feels it takes away from her time.
I feel really upset and honestly don’t want to be alone with her anymore as I don’t feel comfortable enforcing boundaries, especially when she either ignores them or forgets them. My husband is supportive, but we’re also aware that even if we explain things again, she may not remember due to her condition.
AIBU to feel this strongly, and how would you handle this going forward?

OP posts:
Unexpectedlysinglemum · 20/04/2026 22:14

I would call gp first thing in the morning and try and get her anti viral mediator so she doesn’t vet very ill

Edenmum2 · 20/04/2026 21:32

It’s really tricky as it does sound like she’s struggling cognitively so I’m sure it wasn’t intentional….but obviously you have every right to be upset. I think you might have to be a bit more hardline in future and if she’s poorly then just don’t take her round, or at least don’t let her hold the baby. I feel for MIL a bit because she sounds confused and I know how much joy my parents/PIL get from bonding with my DD so it is very tricky to navigate.

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