Ok well it sounds she is retreating in a world where she feels better... and has a feeling of more control...
computer games and porn are both venues that take up quite some energy... she could try to concentrate a bit more on other things, that also fulfill her...
there are quite a few things she probably isn't happy with and she tries to step into a world where she is distracted...
she could try step by step a few things that fulfill her and help her in the longer term:
-cutting on porn
-concentrating on sexual experiences that please both of you. She might have disphoria concerning her bottom parts. You might try devices like a magic wand or smart wand. They are powerful devices, designed to stimulate a whole area, and allow for fantasies meanwhile. Pairs can use it together. Depending on the disphoria it might allow for feelings unrelated to parts, and instead allow for pleasurable fantasies .
All at your own risk

just don't overextend yourself, those devices are powerful. Some people use a cloth in between, for example. Some smart wands have a few speed settings, so they might be regulated a bit better. You might look up a few experiences, there are people of both sexes who are very happy with those devices.
-she might do a few things she likes and which help her get in contact with herself, make for a creative outlet and improve her situation a bit:
-taking up cooking... its creative, can be fun and it could bring her into contact with her female and nurturing side... also gardening... raising a few plants...
-she could try a few minutes of rest every day... having a nice cup of tea, just sitting, enjoying and thinking about what she'd like... meditation like.. just feeling herself... without getting angry, just feeling positive things... what she'd like to do...
-therapy can be helpful. Its not other people telling what to do, in fact its the opposite. A good therapist should help uncover what she needs, and support her in the steps she takes... a gender therapist familiar with the process could guide her through the steps.
-there might be free counseling available at lgbt centers... she might even call there, it might not be necessary to go there in person...
and there are helplines, and maybe even local support groups...
she could call one of those for example, people are there to help and give advice (there are many others):
glnh dot org/talkline/ (this is the national lgbt youth helpline)
translifeline dot org
-she might do a few things that might help her feel her female side: growing her hair out, trying different clothing styles... wearing womens trousers, sweaters one or two sizes bigger... second hand stores could be a good source...
Well you could tell her to reduce step by step a bit of the virtual world and do a few things in the real world that could make her happy...