Thank you for reaching out to us. Betrayal of trust within a relationship can be difficult to deal with, not just for her but for you as well. In terms of her suspicion, have conversations with her figuring out ways of helping both her and yourself feel secure within the relationship. You both together need to work on creating happy moments, and form new memories shared with each other, to help bring in positivity towards the present and the future in your marriage. With regards to the frequent fights, while some of the irritability could be attributed to the ongoing lockdown and it's consequent anxieties and challenges, the mistrust could also be adding to the reasons for conflict. Therefore, it is advisable to work on building the strength of your existing relationship by adding to the love, care, as well as safety and security you both can provide for each other, to help heal the betrayal of the past.