Only Ever You by Natasha West

No one expects to be widowed at thirty-eight. But that’s exactly what happens to Jessie Downes after her wife dies in a tragic accident. Jessie is left devastated and angry and after she lashes out in grief, she finds herself in court-ordered group therapy. For self-contained Jessie, it’s a fresh nightmare. She’d rather be picking litter on the side of a highway than forced to attend a group where people talk about their problems.
But little by little she finds herself drawn into the workings of the group and its assortment of eccentric members. Specifically, Annie Perkins, a sweet yet closeted woman who is trying to work through her pathological fear of making decisions.
Jessie and Annie are surprised to find a connection. But is it more than friendship? And if it is, does Jessie have the strength to allow someone in after losing the only woman she ever expected to love? Or should she just commit to being alone?