My stepmum has never been great with technology but she left her phone out in the grass in the garden and needless to say it got very wet. After it dried out everything (and I mean everything) but the middle button was working, I've tried to find alternative ways to use the phone without the trackpad/middle button but it won't even unlock without it so I'm sort of stuck ... the water damage spot is all red so we can't really go and have it looked at. Any advice? or is it just something that we are going to have to go and get fixed (which may be worth more than the phone itself)

Thanks