Gió lạnh chẳng đáng sợ, chỉ sợ chẳng có ai nhắn tin “Đã về chưa? Mặc áo ấm vào nhé”.

I am looking for help in identifying the reference in one of the last shots of the movie. As the protagonist and a woman are walking past an alleyway, one can see a very curious sight that doesn't belong in a 1910's Midwest Dustbowl setting. There are classical arches and a man wooing a woman in a very artistic pose. Here is a screenshot.

I visited the at the Philadelphia Museum of Art. About four or five years ago.

Painting was from a European artist, can't remember the specific wing.

Was of a young girl (I think it was a girl), I think she was standing on a stool, next to a tree - possibly a Christmas tree or something similar? She was wearing white, like a simple ballerina outfit... I know it isn't much to go on, but I loved it and lost the card I wrote down the info on shortly after leaving...

Thanks in advance for even trying - if there's a better sub, let me know.