Gorgeous kid. It's so often the case that the baby feels the tension in the parent and feeds it back to them. You end up stuck in a loop. Looks like you found an angel and circuit-breaker just when you needed her.
I remember once years ago I was a security guard at a shopping centre, and a lady locked her 1 year old and keys in the car. She realised immediately, so he hadn't been there long. It was an overcast, Autumn day, so no heat stress issues.
We got there only a few minutes later, and a few of my colleagues started trying the usual tricks to gently break in.
In the meantime, this young mum stood in front of the car looking distraught; so much so that her son picked up on it, and started getting worried, himself. That made her more worried, etc.
I walked her around to the back of the car, out of his eye sight, then went back to the front and started pulling faces until he cheered up again.
If he were in any real danger, we could've smashed a window real quick, but he wasn't, so why give her a hefty repair bill for no reason?
Only took less than 10 mins to get in; and his only source of discomfort was her discomfort.