I have found the books Connecting Through Yes and I Hear You to be good resources for learning some useful communication and connection strategies.
My suggestion is I as I said to be her friend as much as possible, listening to her and validating her feelings with agreement when possible and at least understanding if she says something you do not agree with (to show her you respect her thoughts and feelings). Doing this instead of arguing or disagreeing is a good place to start. Try not to put pressure on her for reassurances about the relationship, do not tell her you love her right now.
M: 40 W: 37 T: 20 MR: 13 S13, S9, S4 BD: 1/29/18 Sep: 4/23/18 (I moved out) 8/24/18 I come home, she moves out
If you want to get out of the hole, drop the shovel.