Tracy I am sorry to hear you have so much going on right now.
If I suspected something was wrong with my daughter and she was under 20 yrs old I might look at the screen but even then I am not sure I would since privacy is a big issue to me.
I feel like your mom made a mistake about this get her to realize this was a mistake and ask her to apologize to you for doing that.
Shes still your mom and none of us are perfect we all make mistakes.
You and Mike need to sit down alone somewhere quite and have a long talk about where your relationship is going tell him how you are feeling at this time. Dont keep it bottled up inside you have known him long enough to be able to spill your gutts to him.Honesty is always the best policy.
Hang in there you are just going thru a rough time..
Big Hugs and Lots of prayers for you!