Tell her the truth about why you love her. If you think she is {beautiful, funny, cute, sexy, pretty, amazing, inspiring} then tell her.

Both of you together learn how to use voiceover (iOS), Talkback (Android), or other screen readers while their is still some sight to help see what is going in when the voice speaks. Also both learn to use apps like Seeing AI and Soundscape together.

Do you live together? Try keeping a routine of where things are and leaving them in their homes. Building a mental map of your surroundings is necessary, especially if there's going to be a transition into complete blindness. Being supportive, compassionate, and patient are going to be integral to lessening the stress on her. She's going to go through tough times, and being a source that motivates and nurtures her will yield the best results. Pay attention for signs of depression and anxiety. You already want to help. It seems daunting, but you seem up for the challenge. Best of luck to you and yours.

Look for resources available to the blind in your state. There should be a government vocational rehabilitation agency for the blind in your state. Is she in school or working? Look into assistive technology that may fit her needs. An iPhone and laptop with a screen reader can go a long way. Also look into helping her find a therapist who has worked with clients with disabilities like blindness. Her ophthalmologist or hospital social worker might be able to provide referrals. I hope that this helps.

Ask her if she wants to start to learn things that can help her in advance of becoming blind. Braille, screen reader use, auditory cooking, etc.

I constantly wish I'd learned Braille about two years before I lost my vision when I had the chance to, my mother was doing a report for college on learning aids for kids with disabilities, but I brushed it off, never expecting to need it. Joke was on me, though.

If you do live together, start organizing things to be easy to find and keep things where they go. Instead of carrying the remote with you, keep it on the coffee table or in a basket next to the couch, for example. Keep your shoes in a shoe bin or in cubbies made for them, etc. Not only does it help cut down on frustration for the blind individual, it allows for more independence and makes it easier to clean when there's not shoes and other things just sitting around on the floor.

Don't do things for her unless she explicitly asks you to. Express your feelings in words. Don't rely on non-verbal or visual cues.