iTunes match deletes playlists from iPad mini?

Hello, I have a very serious problem: iTunes match seems to negatively change my mother's iPad mini's music organization. I try to explain. She likes to create her own playlists, directly from the iPad; she does not have her own computer and does not use iTunes, sharing music, backing up and ordinary maintenance is my task. I do it from my mac. We have 2 different libraries, as my music tastes are opposite from my mother's. To avoid apple's restriction, 90 days of delay when you switch 2 apple IDs, I installed a virtual machine, windows7, and use my mother's library from windows and mine is on the mac. well, when I add music to my mother's library, she gets it on her iPad mini. but playlist she created before, disappear from the tablet. Should iTunes match save playlist on the cloud too? I am thinking I am doing something wrong, such as not transferring data from iPad to computer, and not synchronizing But the strange thing is that, I do not synchronize or transfer data often I just add files to the "add automatically" folder open iTunes, and then, find the songs directly on the match. I do not use playlists so often so I do not know how they behave ... the small playlist i created for testing with my library, is inserted in my iPad and iPhone too! i do not know why my mother's library behaves differently thanks for help!