skype not getting notifications from certain contact

[EspHack]

its the second time it happens, the first it was on wp8.0 and I just made a new Skype account for my gf and merged it with her ms account, it worked, but now im facing the same issue again on 8.1 and don't know what else to do, I've tried reinstalling, deleting temp files, restarting, and some commands like /alertson off and /remotelogout, nothing helps, I get notifications from all my contacts except her, not only that but if she texts me from msn it works, I guess since it is the most used contact its most likely full of history files and there is some ridiculous wp limitation forcing it to fail