The Way Back to Faith by Carolyne Aarsen

Twin nieces that need a firm hand.
A flaky mother who leaves him stranded.
And a far too attractive woman who is his only hope

Dean Napier is not interested in love. As a successful architect with a huge project underway, he has enough going on. Including finding a tutor for the twin nieces he just earned guardianship of. The young girls need a steady and firm hand.
Sandra Bachman is the exact opposite of what Dean has been looking for. She’s spunky and impulsive and full of life. However, she is the tutor his mother hired without consulting him. And he can’t find anyone else.
The last thing Sandra needs or wants in her life is someone who is set on curbing her artistic flare. But she needs the money to restart her stained-glass business so for the sake of the girls she decides to work with their inflexible uncle. It would be easier if he didn’t remind her of her estranged father.
Dean and Sandra are certain they can work together without silly feelings getting in the way. However, the twins have other plans.
Will Sandra and Dean find more similarities than differences in each other and learn to work together? Will the twins and fate intervene in the best possible way?

(Previously released as Twin Blessings)