I can not say anything other than how great, wonderful, and perfect ... .
So don't. This is Glover's point. Have reasonable expectations for your own needs (unrelated to your wife) and pursue them (actions, not words).
With BPD traits, there is another layer to consider, which is their insecurity and emotional volatility and learning how not to fuel it or play into it (like no JADE, allowing extinction burst without reacting, validation, behavioral vs intellectual reactions).
Share some problems here - get help problem solving.