Hi Shruti,
again, this is a case of stress pronouns. "Toi" is the stress pronoun for "tu" and "elle" is the same as personal and stress pronoun.
You and her -- Toi et elle
you and him -- Toi et lui
She and them -- Elle et eux
-- Chris (not a native speaker).
Bonjour Shruti !
Same case here as previously.
While in English, you could nowadays use colloquially either you/she or you/her in subject groups, in French, you can only use the stress pronouns toi/elle.
See our related lesson:
https://progress.lawlessfrench.com/revision/grammar/how-disjunctive-stress-pronouns-are-used-in-both-compound-subjects-and-objects-unlike-english
Bonne journée !
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