Glossary entry (derived from question below)
Spanish term or phrase:
su mirada azul la atraversó
English translation:
with a look from his piercing blue eyes /he gazed at her with his piercing blue eyes
Spanish term
United States
Laudable Lady Linguist
Native in: English 
Works in: Spanish to English, French to English, English to Spanish, and 3 more.
su mirada azul la atraversó
— Escucha — levantó la mano para tocarle la cara y todos los presentes observaron asombrados, la quietud con la que Erik aceptaba su caricia — quiero que te quedes con Kaira, por favor. Si lo haces, haré lo que quieras.
— ¿Seguro? ¿lo que yo quiera? —su mirada azul la atravesó.
Something better than "his blue-eyed gaze seemed to go/cut right through her".
Gracias,
Barbara
Dec 29, 2019 21:31: Barbara Cochran, MFA Created KOG entry
Non-PRO (2): Carol Gullidge, Yvonne Gallagher
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Proposed translations
with a look from his piercing blue eyes /he gazed at her with his piercing blue eyes
A piercing look from his blue eyes
His piercing blue eyes on her
| Your second option seems pretty good. Thanks. |
| agree |
Yvonne Gallagher
: seems the simplest way of dealing with it
15 hrs
|
|
Yes! Thanks.
|
Mexico
ATA cert., literary, audiovisual, legal
Native in: English (Variant: US) 
Works in: Spanish to English, Latin to English
His blue eyes pierced her to her core/marrow.
| agree |
Muriel Vasconcellos
45 mins
|
| neutral |
Yvonne Gallagher
: a bit OTT? Asker's own "his blue-eyed gaze seemed to go/cut right through her" is preferable.
15 hrs
|
| agree |
Wendy Streitparth
: 'to THE core"
15 hrs
|
United Kingdom
Linguistic flair and an eye for detail
Native in: English
Works in: Spanish to English, English
his gaze a blue laser
| neutral |
Yvonne Gallagher
: really?! "blue laser", "lasering"??
9 hrs
|
|
Yes, really. No need for silly punctuation.
|
Mexico
Confianza, certeza, creatividad.
Native in: Spanish (Variant: Mexican)
Works in: English to Spanish, Italian to Spanish, French to Spanish, and 6 more.
his blue glance bewitched her
| disagree |
Yvonne Gallagher
: "his blue glance" is not English
8 hrs
|
| agree |
David Ronder
: Actually you'll find 'blue glance' in Conrad and even Sheridan Le Fanu. You claim to be a scholar of Irish literature, Yvonne: clearly not enough of one.
16 hrs
|
Argentina
Native in: English
Works in: Spanish to English, Portuguese to English, French to English
his blue eyes transfixing her
A more elaborate version could "his blues eyes transfixing her with a gaze"
Discussion
https://books.google.co.uk/books?id=KPy-DwAAQBAJ&pg=PT4300&l...
"Do you mean it? Anything that I wish?" he said as the blue is his eyes grew in intensity.
or "as the intensity of his blue eyes grew"
Literature and music poetry/lyrics, can be translated very loosely some think.