You definitely need to first understand the condition with some openness regarding the same.
Also, you can take few sessions for yourself and your wife so you both can understand and work your relationship out better by further avoiding common difficulties that might come into the relationship.
Next Steps
It is very rarely emphasized, but care givers do need counseling to combat the stress and worries that they go through while looking after their beloved suffering from any form of mental illness as it might become overwhelming over a period of time.
Health Tips
You can schedule a consult with me and get better clarity on taking further steps and contemplating your worries for continuing the marriage.