Life is for living.
If you are thinking about death - then you aren’t living it fully.
What any decent , sane person would wish for their friends and loved ones - is that they followed their heart , and did what they wanted , without hurting others.
Keeping secrets , hiding in the closet , skulking about , lying to children - all behaviour that is bad for your health , and a mind-fuck for anyone in your life.
Empathy is not just a product of mind. It has lots to do with vibration , and if you are saying one thing , and sending other signals - then you will be a strange person to be around. People will “sense” something is up.
So be honest , straight from the outset.
What could you possibly lose? Nothing tangible. Unless you and your partner wish to give all your assets to divorce lawyers - which would be stupid.
If it matters that much - why did you do this thing , when you knew you would risk mental illness by trying to keep it secret?
That action says a lot about what type of person you are.
One solution is to ditch the lot , and discuss the subject with your partner - saying that you’d like to introduce a bit of it into your relationship. And go from there.
Buy the new stuff together , and take her on that journey with you.
Sound like a plan?