It seems like you've mentioned attaching a picture of the video, but unfortunately, I can't see any attachments in the message. However, I can still try to help you with the issue you're facing with the videos from your girlfriend's old Mac on your Windows laptop.
If you can provide a description of the issue or any error message you're encountering when trying to play the videos, I can assist you in troubleshooting the problem.
Some common issues when transferring videos between Mac and Windows systems include incompatible video formats or codecs. You may need to install additional codecs on your Windows laptop to play certain video files.
Feel free to describe the problem, and I'll do my best to provide you with a solution.