Hello

I have a question regarding "would rather."
A: I would rather she
came with us.
B: I would rather she
comes come with us.
According to grammar rules, "would rather" should always be followed by a past tense when other people are involved in the action.
However I sometimes come across the sentences like example B, followed by a present tense or occasionally a future tense.
Are the sentences like B acceptable in spoken language?
Many thanks for your help in advance.

Candy