Eva, be careful meeting this stranger in her appt, a corridor or even your own appt, be wary of bringing her in to your life. You already have so much going on. Is it possible to invite her for a coffee downstairs if your apartment block has one or in a coffee shop very near by if one not next door. You have much to share, but not with a stranger, be as open as you can without letting your guard down. Try to get over you are more concerned with your grandchilds sleep rather than your own disruption. Some people live to make others lives difficult, but she might be more ameniable to mending her ways if she can see the child is affected. Just please be careful, don't let her know you are vulnerable. We know only to well how unpredictable strangers in our life can be