That happened to my best friends tama.We were in school and her tama started crying just before we left school,which was 3:35PM.At 7:30,she rang me up and told me it was still cring.Disipline didn't work or praise.2 days later she rang me up again and told me that it had stopped.So kinda the best thing to do is just wait and pretend that it's normal and not crying it's eyes out,and play with as if it isn't crying until it stops.I did kinda tell my friend to connect with mine but she said no and I said it'll make it feel better and she still said no.