Rashi on Genesis 24:55/רש"י על בראשית כ״ד:נ״ה

1ויאמר אחיה ואמה AND HER BROTHER AND HER MOTHER SAID —But where was Bethuel? He wished to prevent the marriage therefore an angel came and killed him (Genesis Rabbah 60:12).

2ימים (literally, days) means a year — just as (Leviticus 25:29) “For a whole year (ימים) shall he have the right of redemption” — for the custom was to give a maiden twelve months to provide herself with a trousseau (literally, ornaments) (Genesis Rabbah 60:12).

3או עשור OR TEN — i. e. ten months. But if you say that it does really mean “days” (“a few days”, and that it does not mean a year) I reply that it is not usual for people who make a request to ask for a little and to say “If you do not agree to this, then give us even more” (Ketubot 57b).