Part of a duo

The merest glimpse of handsome, sophisticated Benedict Warrender was enough to make wallflower Lily Gray blush. But since a twist of fate allowed her to enter his orbit, it's been the memories of their life-altering night together that make her cheeks burn.

Another blurb:
Benedict Warrender and Lily Gray have ons, she wakes up to see his engagement announcement,
3 years later he finds out she had his baby
Sick child (recovers)

Read GR reviews, wish i'd heeded warnings.

Leads into her sister's book
♤One Night to Wedding Vows (Lara Gray & Raoul Di Vittorio story)
Also panned by GR