so here it is....
she has two phones, one that she brings with her in the house (pretty much everywhere and uses it as her main phone) and one that she always keeps in her car unless needs charging (she says she needs this phone to talk to her dad who is in a different country and apparently she gets cheap call using it)
so found this dodgy number (saved under the name of F) in her secret phone about 10 days ago, shes been texting that number a few times, texts like "oi Mr where are you?" or "Are you still alive? call me back" and calling that number pretty much everyday, calls lasting 5min to 15min.....
even more dodgy are the calls timing, for example a couple of times she said she comes home late or starts early (by about an hour) and there was calls made during those times....
so i phoned the number and some guy picked up