Oh, i'll let you in on one of them - when I got Ukraine out against Whirlipede, her Venoshock did 1/3 my health. Then Flame Wheel scored a critical hit OHKO...and Poison Point activated. Had I not scored that, Venoshock would have killed. So that's pretty cool. I actually used Azumarill to beat Grimer. There are quite a few things that might happen before Burgh, too.
And yeah, my first pair I dumped because we had nothing in common and I never had anything to say to her, second one just vanished, and this one? Well, she said "if I knew I wouldn't be active for a little while, I would tell you"... But she didn't, which is what's really concerning me here. Not only that, but I told her about how the aforementioned one just disappeared and she felt sorry for me, trying to reassure me I wouldn't have to worry about it.
But in case you didn't see, when I talked to Sheep over Skype, she suggested that she wouldn't disappear as quickly as such after donating to Crystal tier. I just hope she's fine, because me and her were having so much fun together. I even gave her her first shiny ever, which she was so delighted about. Last she went missing it was because she got upset after social anxiety took over her. Maybe she's just busy again, i'll have to give her some time.