Girl gives her number on hinge, then unmatches a day later.

I managed to pull the girls number off hinge after having a decent conversation, took it to WhatsApp and was just engaging in a bit of fun talk about our dogs, I showed her my dog and she reacted well, I then asked her if she had a dog and we went back and forth a bit on our dogs. I then jokingly said we should double date with our dogs, obviously I wasn’t intending on that for real...anyway, no response for 7 hours but she’s a bit weird with her responding times. Later this evening I checked hinge, and we was unmatched. This might not be anything negative, since I’m still matched to girls on there that I don’t even speak with anymore over text, but I’m wondering if you guys have had any experience with this kind of occurrence before? Usually in my experience there was a reason why they unmatched after having given out their number, that’s usually by losing interest.