My FDW has asked for Wifi password. I am not comfortable giving it as she is already on the phone all day long - I work full time, so hard to limit phone time). She has internet through her phone. What do you all do?

We used to only let her use her phone for a few hours afterwork at night (as advised by agent), and then slowly let her keep her phone and now also gave her the wifi password, willingly. We keyed in the password for her and told her that we will change the password if she neglects her work. So far, she exercises the discipline of no phone while at work.