Oh sorry op! My reply about a baby-sitting group was in response to your op where you say,
“There is literally nobody else who can help”.
If you have mum friends then why not ask them? This is the perfect situation as they will have plenty of advance notice.
Reading between the lines op, I think perhaps you just don’t want to travel so far away from your infant yet and you don’t want to risk any misunderstanding happening at pick up time. And that’s completely understandable, she’s only 14 mths, especially if this is the first time you have gone so far away from her, and you are parenting alone. I “get” the crushing sense of responsibility you feel.
You get moments in parenting like this where you have to plan well and then take a leap of faith and trust in others.
If the anxiety is too much though, then you may have to have a word at work about it m, but they may not be best pleased. Keep in mind that being present and doing well at work is another way of helping your dd in the long term. (She’ll thank you when she’s a teenager and wants the latest phone anyway 😂😂)
In the short term, I would drop her off as normal, attend the work event and then, if you still feel really uncomfortable about the alternative arrangements put in place, I would duck out early citing a childcare emergency.
Good luck!