So two SSRIs, buspirone (Buspar) which works well for a few and not at all for most and then only for GAD, hydroxyzine which is a antihistamine with fairly good anti anxiety properties, but usually not enough for HA and bupropion (Wellbutrin) which is a stimulating AD that can have many with anxiety disorders almost literally climbing walls.
I'm not a fan of SNRIs because of their short half-lives and slow-release formulations which can make starting and stopping them difficult. The older tricyclic class ADs (TCAs) are a better bet, imho. They are arguably more effective than SSRIs and SNRIs, less likely to poop out and most are available in small dose tablets relative to their therapeutic dose range making it easy to start on low doses to minimise initial side-effects and also to wean off in small steps. The TCAs tend to produce less severe side-effects and withdrawal symptoms anyway.
Hydroxyzine was worth a shot. It isn't quite as potent an anxiolytic as the benzodiazepines, but for milder anxiety it is often potent enough. However, HA is on the OCD spectrum which are the anxiety disorders that are most treatment resistant, defying both ADs and therapy so I'm not surprised it wasn't enough. A combination of both meds and therapy seems to produce the best outcomes.
Sounds like she might have a mild case of pill-phobia - there's a pill for that!
Most guidelines advise taking ADs for no less than 12 months the first time so don't get rushed off medication. I've seen many quit their meds after a few months because they thought they had the problem licked only to crash and burn soon after and then really struggle to get things back under control. Plus, for a few of us, e.g. me, anxiety disorders are chronic conditions which fluctuate in intensity but don't ever go away completely so remaining permanently medicated is the best long term option.