When a young bride gets cold feet, her grandmother who has multiple ex-husbands is the only one who can save the day

thank you both for your feedback and questions, they are very helpful. i'll process and revise. i hope to post a revised logline soon.

happy holidays!

In what way? Who is the protagonist, the grandmother? What is personally at stake for her (other than that grandmothers always worry about their grandchildren)? What is the action she stakes after her granddaughter (presumably) leaves her groom at the altar?

If the daughter is the lead character then you should give her a goal, or something she wants or needs.

If the grandmother is the lead character, the logline should be told from her perspective.

An example of the story told from the Grandmothers point of view:
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"After her granddaughter get's cold feet, a free spirited grandmother recounts the ecstasy and tribulation of her own love life which led to meeting and losing the love of her life."
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Hope that helped!